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Finding the Fourth Proportional to 138,082.55, 207,121.71 and 62,127.44

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Solution

The fourth proportional to 138,082.55, 207,121.71 and 62,127.44 is: 93,190.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,082.55 : 207,121.71 = 62,127.44 : x
  2. Step 2: Convert to fraction form
    138,082.55/207,121.71 = 62,127.44/x
  3. Step 3: Cross multiply
    138,082.55x = 207,121.71 × 62,127.44
  4. Step 4: Simplify right side
    138,082.55x = 12,867,941,610.72
  5. Step 5: Solve for x
    x = 12,867,941,610.72/138,082.55
  6. Step 6: Final answer
    x = 93,190.21

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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.