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Finding the Fourth Proportional to 138,171.67, 207,261.95 and 38,332.87

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Solution

The fourth proportional to 138,171.67, 207,261.95 and 38,332.87 is: 57,500.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,171.67 : 207,261.95 = 38,332.87 : x
  2. Step 2: Convert to fraction form
    138,171.67/207,261.95 = 38,332.87/x
  3. Step 3: Cross multiply
    138,171.67x = 207,261.95 × 38,332.87
  4. Step 4: Simplify right side
    138,171.67x = 7,944,945,193.63
  5. Step 5: Solve for x
    x = 7,944,945,193.63/138,171.67
  6. Step 6: Final answer
    x = 57,500.54

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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.