Home / 231,761.24-319,848-129,781.52

Finding the Fourth Proportional to 231,761.24, 319,848 and 129,781.52

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Solution

The fourth proportional to 231,761.24, 319,848 and 129,781.52 is: 179,108.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,761.24 : 319,848 = 129,781.52 : x
  2. Step 2: Convert to fraction form
    231,761.24/319,848 = 129,781.52/x
  3. Step 3: Cross multiply
    231,761.24x = 319,848 × 129,781.52
  4. Step 4: Simplify right side
    231,761.24x = 41,510,359,608.96
  5. Step 5: Solve for x
    x = 41,510,359,608.96/231,761.24
  6. Step 6: Final answer
    x = 179,108.29

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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.