Home / 231,872.16-319,983.12-131,279.52

Finding the Fourth Proportional to 231,872.16, 319,983.12 and 131,279.52

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Solution

The fourth proportional to 231,872.16, 319,983.12 and 131,279.52 is: 181,165.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,872.16 : 319,983.12 = 131,279.52 : x
  2. Step 2: Convert to fraction form
    231,872.16/319,983.12 = 131,279.52/x
  3. Step 3: Cross multiply
    231,872.16x = 319,983.12 × 131,279.52
  4. Step 4: Simplify right side
    231,872.16x = 42,007,230,401.70
  5. Step 5: Solve for x
    x = 42,007,230,401.70/231,872.16
  6. Step 6: Final answer
    x = 181,165.48

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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.