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Finding the Fourth Proportional to 128,049.30, 192,073.95 and 54,167.70

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Solution

The fourth proportional to 128,049.30, 192,073.95 and 54,167.70 is: 81,251.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,049.30 : 192,073.95 = 54,167.70 : x
  2. Step 2: Convert to fraction form
    128,049.30/192,073.95 = 54,167.70/x
  3. Step 3: Cross multiply
    128,049.30x = 192,073.95 × 54,167.70
  4. Step 4: Simplify right side
    128,049.30x = 10,404,204,101.42
  5. Step 5: Solve for x
    x = 10,404,204,101.42/128,049.30
  6. Step 6: Final answer
    x = 81,251.55

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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.