Home / 129,612.38-194,495.11-54,727.68

Finding the Fourth Proportional to 129,612.38, 194,495.11 and 54,727.68

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Solution

The fourth proportional to 129,612.38, 194,495.11 and 54,727.68 is: 82,123.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,612.38 : 194,495.11 = 54,727.68 : x
  2. Step 2: Convert to fraction form
    129,612.38/194,495.11 = 54,727.68/x
  3. Step 3: Cross multiply
    129,612.38x = 194,495.11 × 54,727.68
  4. Step 4: Simplify right side
    129,612.38x = 10,644,266,141.64
  5. Step 5: Solve for x
    x = 10,644,266,141.64/129,612.38
  6. Step 6: Final answer
    x = 82,123.84

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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.