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Finding the Fourth Proportional to 129,548.40, 194,614.20 and 126,049.20

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Solution

The fourth proportional to 129,548.40, 194,614.20 and 126,049.20 is: 189,357.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,548.40 : 194,614.20 = 126,049.20 : x
  2. Step 2: Convert to fraction form
    129,548.40/194,614.20 = 126,049.20/x
  3. Step 3: Cross multiply
    129,548.40x = 194,614.20 × 126,049.20
  4. Step 4: Simplify right side
    129,548.40x = 24,530,964,218.64
  5. Step 5: Solve for x
    x = 24,530,964,218.64/129,548.40
  6. Step 6: Final answer
    x = 189,357.52

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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.