Home / 84,251,939.20-126,377,908.80-72,914,531.20

Finding the Fourth Proportional to 84,251,939.20, 126,377,908.80 and 72,914,531.20

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Solution

The fourth proportional to 84,251,939.20, 126,377,908.80 and 72,914,531.20 is: 109,371,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,251,939.20 : 126,377,908.80 = 72,914,531.20 : x
  2. Step 2: Convert to fraction form
    84,251,939.20/126,377,908.80 = 72,914,531.20/x
  3. Step 3: Cross multiply
    84,251,939.20x = 126,377,908.80 × 72,914,531.20
  4. Step 4: Simplify right side
    84,251,939.20x = 9,214,785,974,188,354
  5. Step 5: Solve for x
    x = 9,214,785,974,188,354/84,251,939.20
  6. Step 6: Final answer
    x = 109,371,796.80

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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.