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Finding the Fourth Proportional to 127,679.20, 192,474.92 and 119,115.88

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Solution

The fourth proportional to 127,679.20, 192,474.92 and 119,115.88 is: 179,565.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,679.20 : 192,474.92 = 119,115.88 : x
  2. Step 2: Convert to fraction form
    127,679.20/192,474.92 = 119,115.88/x
  3. Step 3: Cross multiply
    127,679.20x = 192,474.92 × 119,115.88
  4. Step 4: Simplify right side
    127,679.20x = 22,926,819,473.73
  5. Step 5: Solve for x
    x = 22,926,819,473.73/127,679.20
  6. Step 6: Final answer
    x = 179,565.81

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.