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Finding the Fourth Proportional to 192,269.92, 288,438.08 and 85,691.76

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Solution

The fourth proportional to 192,269.92, 288,438.08 and 85,691.76 is: 128,552.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,269.92 : 288,438.08 = 85,691.76 : x
  2. Step 2: Convert to fraction form
    192,269.92/288,438.08 = 85,691.76/x
  3. Step 3: Cross multiply
    192,269.92x = 288,438.08 × 85,691.76
  4. Step 4: Simplify right side
    192,269.92x = 24,716,766,726.22
  5. Step 5: Solve for x
    x = 24,716,766,726.22/192,269.92
  6. Step 6: Final answer
    x = 128,552.44

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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.