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Finding the Fourth Proportional to 159,811.52, 239,343.84 and 126,306.80

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Solution

The fourth proportional to 159,811.52, 239,343.84 and 126,306.80 is: 189,165.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,811.52 : 239,343.84 = 126,306.80 : x
  2. Step 2: Convert to fraction form
    159,811.52/239,343.84 = 126,306.80/x
  3. Step 3: Cross multiply
    159,811.52x = 239,343.84 × 126,306.80
  4. Step 4: Simplify right side
    159,811.52x = 30,230,754,530.11
  5. Step 5: Solve for x
    x = 30,230,754,530.11/159,811.52
  6. Step 6: Final answer
    x = 189,165.05

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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.