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Finding the Fourth Proportional to 138,084.56, 207,124.70 and 62,129.44

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Solution

The fourth proportional to 138,084.56, 207,124.70 and 62,129.44 is: 93,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,084.56 : 207,124.70 = 62,129.44 : x
  2. Step 2: Convert to fraction form
    138,084.56/207,124.70 = 62,129.44/x
  3. Step 3: Cross multiply
    138,084.56x = 207,124.70 × 62,129.44
  4. Step 4: Simplify right side
    138,084.56x = 12,868,541,621.17
  5. Step 5: Solve for x
    x = 12,868,541,621.17/138,084.56
  6. Step 6: Final answer
    x = 93,193.20

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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.