Home / 231,173.10-319,016.91-129,202.86

Finding the Fourth Proportional to 231,173.10, 319,016.91 and 129,202.86

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Solution

The fourth proportional to 231,173.10, 319,016.91 and 129,202.86 is: 178,298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,173.10 : 319,016.91 = 129,202.86 : x
  2. Step 2: Convert to fraction form
    231,173.10/319,016.91 = 129,202.86/x
  3. Step 3: Cross multiply
    231,173.10x = 319,016.91 × 129,202.86
  4. Step 4: Simplify right side
    231,173.10x = 41,217,897,160.36
  5. Step 5: Solve for x
    x = 41,217,897,160.36/231,173.10
  6. Step 6: Final answer
    x = 178,298.85

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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.