Home / 231,715.38-319,692.91-129,725.85

Finding the Fourth Proportional to 231,715.38, 319,692.91 and 129,725.85

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Solution

The fourth proportional to 231,715.38, 319,692.91 and 129,725.85 is: 178,980.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,715.38 : 319,692.91 = 129,725.85 : x
  2. Step 2: Convert to fraction form
    231,715.38/319,692.91 = 129,725.85/x
  3. Step 3: Cross multiply
    231,715.38x = 319,692.91 × 129,725.85
  4. Step 4: Simplify right side
    231,715.38x = 41,472,434,488.72
  5. Step 5: Solve for x
    x = 41,472,434,488.72/231,715.38
  6. Step 6: Final answer
    x = 178,980.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.