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Finding the Fourth Proportional to 138,717.92, 207,977.52 and 58,761.28

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Solution

The fourth proportional to 138,717.92, 207,977.52 and 58,761.28 is: 88,099.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,717.92 : 207,977.52 = 58,761.28 : x
  2. Step 2: Convert to fraction form
    138,717.92/207,977.52 = 58,761.28/x
  3. Step 3: Cross multiply
    138,717.92x = 207,977.52 × 58,761.28
  4. Step 4: Simplify right side
    138,717.92x = 12,221,025,286.43
  5. Step 5: Solve for x
    x = 12,221,025,286.43/138,717.92
  6. Step 6: Final answer
    x = 88,099.83

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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.