Home / 231,182.38-319,025.68-129,208.69

Finding the Fourth Proportional to 231,182.38, 319,025.68 and 129,208.69

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Solution

The fourth proportional to 231,182.38, 319,025.68 and 129,208.69 is: 178,304.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,182.38 : 319,025.68 = 129,208.69 : x
  2. Step 2: Convert to fraction form
    231,182.38/319,025.68 = 129,208.69/x
  3. Step 3: Cross multiply
    231,182.38x = 319,025.68 × 129,208.69
  4. Step 4: Simplify right side
    231,182.38x = 41,220,890,189.16
  5. Step 5: Solve for x
    x = 41,220,890,189.16/231,182.38
  6. Step 6: Final answer
    x = 178,304.64

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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.