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Finding the Fourth Proportional to 138,375.11, 207,568.13 and 38,544.03

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Solution

The fourth proportional to 138,375.11, 207,568.13 and 38,544.03 is: 57,817.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,375.11 : 207,568.13 = 38,544.03 : x
  2. Step 2: Convert to fraction form
    138,375.11/207,568.13 = 38,544.03/x
  3. Step 3: Cross multiply
    138,375.11x = 207,568.13 × 38,544.03
  4. Step 4: Simplify right side
    138,375.11x = 8,000,512,037.04
  5. Step 5: Solve for x
    x = 8,000,512,037.04/138,375.11
  6. Step 6: Final answer
    x = 57,817.56

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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.