Home / 128,932.62-193,398.66-72,747.24

Finding the Fourth Proportional to 128,932.62, 193,398.66 and 72,747.24

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Solution

The fourth proportional to 128,932.62, 193,398.66 and 72,747.24 is: 109,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,932.62 : 193,398.66 = 72,747.24 : x
  2. Step 2: Convert to fraction form
    128,932.62/193,398.66 = 72,747.24/x
  3. Step 3: Cross multiply
    128,932.62x = 193,398.66 × 72,747.24
  4. Step 4: Simplify right side
    128,932.62x = 14,069,218,734.70
  5. Step 5: Solve for x
    x = 14,069,218,734.70/128,932.62
  6. Step 6: Final answer
    x = 109,120.71

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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.