Home / 231,877.62-319,986.90-129,902.04

Finding the Fourth Proportional to 231,877.62, 319,986.90 and 129,902.04

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Solution

The fourth proportional to 231,877.62, 319,986.90 and 129,902.04 is: 179,262.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,877.62 : 319,986.90 = 129,902.04 : x
  2. Step 2: Convert to fraction form
    231,877.62/319,986.90 = 129,902.04/x
  3. Step 3: Cross multiply
    231,877.62x = 319,986.90 × 129,902.04
  4. Step 4: Simplify right side
    231,877.62x = 41,566,951,083.28
  5. Step 5: Solve for x
    x = 41,566,951,083.28/231,877.62
  6. Step 6: Final answer
    x = 179,262.45

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1.5x scale

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.