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Finding the Fourth Proportional to 138,169.72, 207,254.58 and 38,329.93

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Solution

The fourth proportional to 138,169.72, 207,254.58 and 38,329.93 is: 57,494.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,169.72 : 207,254.58 = 38,329.93 : x
  2. Step 2: Convert to fraction form
    138,169.72/207,254.58 = 38,329.93/x
  3. Step 3: Cross multiply
    138,169.72x = 207,254.58 × 38,329.93
  4. Step 4: Simplify right side
    138,169.72x = 7,944,053,543.58
  5. Step 5: Solve for x
    x = 7,944,053,543.58/138,169.72
  6. Step 6: Final answer
    x = 57,494.90

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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.