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Finding the Fourth Proportional to 138,237.39, 207,370.89 and 38,397.87

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Solution

The fourth proportional to 138,237.39, 207,370.89 and 38,397.87 is: 57,600.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,237.39 : 207,370.89 = 38,397.87 : x
  2. Step 2: Convert to fraction form
    138,237.39/207,370.89 = 38,397.87/x
  3. Step 3: Cross multiply
    138,237.39x = 207,370.89 × 38,397.87
  4. Step 4: Simplify right side
    138,237.39x = 7,962,600,476.00
  5. Step 5: Solve for x
    x = 7,962,600,476.00/138,237.39
  6. Step 6: Final answer
    x = 57,600.92

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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.