Home / 129,715.38-194,648.10-54,830.70

Finding the Fourth Proportional to 129,715.38, 194,648.10 and 54,830.70

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Solution

The fourth proportional to 129,715.38, 194,648.10 and 54,830.70 is: 82,277.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,715.38 : 194,648.10 = 54,830.70 : x
  2. Step 2: Convert to fraction form
    129,715.38/194,648.10 = 54,830.70/x
  3. Step 3: Cross multiply
    129,715.38x = 194,648.10 × 54,830.70
  4. Step 4: Simplify right side
    129,715.38x = 10,672,691,576.67
  5. Step 5: Solve for x
    x = 10,672,691,576.67/129,715.38
  6. Step 6: Final answer
    x = 82,277.77

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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.