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Finding the Fourth Proportional to 138,471.59, 207,707.44 and 43,711.36

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Solution

The fourth proportional to 138,471.59, 207,707.44 and 43,711.36 is: 65,567.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,471.59 : 207,707.44 = 43,711.36 : x
  2. Step 2: Convert to fraction form
    138,471.59/207,707.44 = 43,711.36/x
  3. Step 3: Cross multiply
    138,471.59x = 207,707.44 × 43,711.36
  4. Step 4: Simplify right side
    138,471.59x = 9,079,175,306.28
  5. Step 5: Solve for x
    x = 9,079,175,306.28/138,471.59
  6. Step 6: Final answer
    x = 65,567.06

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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.