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Finding the Fourth Proportional to 138,175.47, 207,263.21 and 38,335.68

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Solution

The fourth proportional to 138,175.47, 207,263.21 and 38,335.68 is: 57,503.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,175.47 : 207,263.21 = 38,335.68 : x
  2. Step 2: Convert to fraction form
    138,175.47/207,263.21 = 38,335.68/x
  3. Step 3: Cross multiply
    138,175.47x = 207,263.21 × 38,335.68
  4. Step 4: Simplify right side
    138,175.47x = 7,945,575,902.65
  5. Step 5: Solve for x
    x = 7,945,575,902.65/138,175.47
  6. Step 6: Final answer
    x = 57,503.52

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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.