Home / 231,786.26-319,872.10-129,811.46

Finding the Fourth Proportional to 231,786.26, 319,872.10 and 129,811.46

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Solution

The fourth proportional to 231,786.26, 319,872.10 and 129,811.46 is: 179,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,786.26 : 319,872.10 = 129,811.46 : x
  2. Step 2: Convert to fraction form
    231,786.26/319,872.10 = 129,811.46/x
  3. Step 3: Cross multiply
    231,786.26x = 319,872.10 × 129,811.46
  4. Step 4: Simplify right side
    231,786.26x = 41,523,064,314.27
  5. Step 5: Solve for x
    x = 41,523,064,314.27/231,786.26
  6. Step 6: Final answer
    x = 179,143.77

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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.