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Finding the Fourth Proportional to 100,503.92, 138,760.32 and 62,304.29

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Solution

The fourth proportional to 100,503.92, 138,760.32 and 62,304.29 is: 86,020.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,503.92 : 138,760.32 = 62,304.29 : x
  2. Step 2: Convert to fraction form
    100,503.92/138,760.32 = 62,304.29/x
  3. Step 3: Cross multiply
    100,503.92x = 138,760.32 × 62,304.29
  4. Step 4: Simplify right side
    100,503.92x = 8,645,363,753.17
  5. Step 5: Solve for x
    x = 8,645,363,753.17/100,503.92
  6. Step 6: Final answer
    x = 86,020.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.