Home / 103,455,792,047.70-155,183,688,071.55-81,140,371,881.30

Finding the Fourth Proportional to 103,455,792,047.70, 155,183,688,071.55 and 81,140,371,881.30

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Solution

The fourth proportional to 103,455,792,047.70, 155,183,688,071.55 and 81,140,371,881.30 is: 121,710,557,821.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,455,792,047.70 : 155,183,688,071.55 = 81,140,371,881.30 : x
  2. Step 2: Convert to fraction form
    103,455,792,047.70/155,183,688,071.55 = 81,140,371,881.30/x
  3. Step 3: Cross multiply
    103,455,792,047.70x = 155,183,688,071.55 × 81,140,371,881.30
  4. Step 4: Simplify right side
    103,455,792,047.70x = 12,591,662,160,037,225,168,896
  5. Step 5: Solve for x
    x = 12,591,662,160,037,225,168,896/103,455,792,047.70
  6. Step 6: Final answer
    x = 121,710,557,821.95

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Double scale
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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.