Home / 103,455,792,073.70-155,183,688,110.55-81,140,371,907.30

Finding the Fourth Proportional to 103,455,792,073.70, 155,183,688,110.55 and 81,140,371,907.30

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Solution

The fourth proportional to 103,455,792,073.70, 155,183,688,110.55 and 81,140,371,907.30 is: 121,710,557,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,455,792,073.70 : 155,183,688,110.55 = 81,140,371,907.30 : x
  2. Step 2: Convert to fraction form
    103,455,792,073.70/155,183,688,110.55 = 81,140,371,907.30/x
  3. Step 3: Cross multiply
    103,455,792,073.70x = 155,183,688,110.55 × 81,140,371,907.30
  4. Step 4: Simplify right side
    103,455,792,073.70x = 12,591,662,167,236,475,355,136
  5. Step 5: Solve for x
    x = 12,591,662,167,236,475,355,136/103,455,792,073.70
  6. Step 6: Final answer
    x = 121,710,557,860.95

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Double scale
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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.