Home / 231,001.91-318,779.22-129,028.79

Finding the Fourth Proportional to 231,001.91, 318,779.22 and 129,028.79

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Solution

The fourth proportional to 231,001.91, 318,779.22 and 129,028.79 is: 178,057.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,001.91 : 318,779.22 = 129,028.79 : x
  2. Step 2: Convert to fraction form
    231,001.91/318,779.22 = 129,028.79/x
  3. Step 3: Cross multiply
    231,001.91x = 318,779.22 × 129,028.79
  4. Step 4: Simplify right side
    231,001.91x = 41,131,695,439.85
  5. Step 5: Solve for x
    x = 41,131,695,439.85/231,001.91
  6. Step 6: Final answer
    x = 178,057.82

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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.