Home / 231,716.19-319,741.91-129,727.47

Finding the Fourth Proportional to 231,716.19, 319,741.91 and 129,727.47

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Solution

The fourth proportional to 231,716.19, 319,741.91 and 129,727.47 is: 179,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,716.19 : 319,741.91 = 129,727.47 : x
  2. Step 2: Convert to fraction form
    231,716.19/319,741.91 = 129,727.47/x
  3. Step 3: Cross multiply
    231,716.19x = 319,741.91 × 129,727.47
  4. Step 4: Simplify right side
    231,716.19x = 41,479,306,789.92
  5. Step 5: Solve for x
    x = 41,479,306,789.92/231,716.19
  6. Step 6: Final answer
    x = 179,009.10

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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.