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Finding the Fourth Proportional to 129,732.42, 194,604.42 and 39,768.66

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Solution

The fourth proportional to 129,732.42, 194,604.42 and 39,768.66 is: 59,654.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,732.42 : 194,604.42 = 39,768.66 : x
  2. Step 2: Convert to fraction form
    129,732.42/194,604.42 = 39,768.66/x
  3. Step 3: Cross multiply
    129,732.42x = 194,604.42 × 39,768.66
  4. Step 4: Simplify right side
    129,732.42x = 7,739,157,013.48
  5. Step 5: Solve for x
    x = 7,739,157,013.48/129,732.42
  6. Step 6: Final answer
    x = 59,654.76

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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.