Home / 103,455,792,067.95-155,183,688,101.92-81,140,371,901.55

Finding the Fourth Proportional to 103,455,792,067.95, 155,183,688,101.92 and 81,140,371,901.55

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Solution

The fourth proportional to 103,455,792,067.95, 155,183,688,101.92 and 81,140,371,901.55 is: 121,710,557,852.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,455,792,067.95 : 155,183,688,101.92 = 81,140,371,901.55 : x
  2. Step 2: Convert to fraction form
    103,455,792,067.95/155,183,688,101.92 = 81,140,371,901.55/x
  3. Step 3: Cross multiply
    103,455,792,067.95x = 155,183,688,101.92 × 81,140,371,901.55
  4. Step 4: Simplify right side
    103,455,792,067.95x = 12,591,662,165,643,929,583,616
  5. Step 5: Solve for x
    x = 12,591,662,165,643,929,583,616/103,455,792,067.95
  6. Step 6: Final answer
    x = 121,710,557,852.32

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Half scale
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Double scale
Find fourth proportional to 103,455,792,068.95, 155,183,688,103.42 and 81,140,371,902.55
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.