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Finding the Fourth Proportional to 138,165.74, 207,248.60 and 38,325.93

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Solution

The fourth proportional to 138,165.74, 207,248.60 and 38,325.93 is: 57,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,165.74 : 207,248.60 = 38,325.93 : x
  2. Step 2: Convert to fraction form
    138,165.74/207,248.60 = 38,325.93/x
  3. Step 3: Cross multiply
    138,165.74x = 207,248.60 × 38,325.93
  4. Step 4: Simplify right side
    138,165.74x = 7,942,995,144.57
  5. Step 5: Solve for x
    x = 7,942,995,144.57/138,165.74
  6. Step 6: Final answer
    x = 57,488.89

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1.5x scale

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.