Home / 90,724,380.70-136,086,571.05-65,215,212.70

Finding the Fourth Proportional to 90,724,380.70, 136,086,571.05 and 65,215,212.70

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Solution

The fourth proportional to 90,724,380.70, 136,086,571.05 and 65,215,212.70 is: 97,822,819.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,724,380.70 : 136,086,571.05 = 65,215,212.70 : x
  2. Step 2: Convert to fraction form
    90,724,380.70/136,086,571.05 = 65,215,212.70/x
  3. Step 3: Cross multiply
    90,724,380.70x = 136,086,571.05 × 65,215,212.70
  4. Step 4: Simplify right side
    90,724,380.70x = 8,874,914,676,639,414
  5. Step 5: Solve for x
    x = 8,874,914,676,639,414/90,724,380.70
  6. Step 6: Final answer
    x = 97,822,819.05

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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.