Home / 231,911.91-320,035.46-129,935.61

Finding the Fourth Proportional to 231,911.91, 320,035.46 and 129,935.61

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Solution

The fourth proportional to 231,911.91, 320,035.46 and 129,935.61 is: 179,309.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,911.91 : 320,035.46 = 129,935.61 : x
  2. Step 2: Convert to fraction form
    231,911.91/320,035.46 = 129,935.61/x
  3. Step 3: Cross multiply
    231,911.91x = 320,035.46 × 129,935.61
  4. Step 4: Simplify right side
    231,911.91x = 41,584,002,067.05
  5. Step 5: Solve for x
    x = 41,584,002,067.05/231,911.91
  6. Step 6: Final answer
    x = 179,309.47

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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.