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Finding the Fourth Proportional to 138,168.92, 207,257.82 and 38,330.12

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Solution

The fourth proportional to 138,168.92, 207,257.82 and 38,330.12 is: 57,496.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,168.92 : 207,257.82 = 38,330.12 : x
  2. Step 2: Convert to fraction form
    138,168.92/207,257.82 = 38,330.12/x
  3. Step 3: Cross multiply
    138,168.92x = 207,257.82 × 38,330.12
  4. Step 4: Simplify right side
    138,168.92x = 7,944,217,111.54
  5. Step 5: Solve for x
    x = 7,944,217,111.54/138,168.92
  6. Step 6: Final answer
    x = 57,496.41

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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.