Home / 231,308.12-319,082.08-140,691.80

Finding the Fourth Proportional to 231,308.12, 319,082.08 and 140,691.80

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Solution

The fourth proportional to 231,308.12, 319,082.08 and 140,691.80 is: 194,079.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,308.12 : 319,082.08 = 140,691.80 : x
  2. Step 2: Convert to fraction form
    231,308.12/319,082.08 = 140,691.80/x
  3. Step 3: Cross multiply
    231,308.12x = 319,082.08 × 140,691.80
  4. Step 4: Simplify right side
    231,308.12x = 44,892,231,479.49
  5. Step 5: Solve for x
    x = 44,892,231,479.49/231,308.12
  6. Step 6: Final answer
    x = 194,079.79

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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.