Home / 129,961.88-179,375.82-82,278.80

Finding the Fourth Proportional to 129,961.88, 179,375.82 and 82,278.80

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Solution

The fourth proportional to 129,961.88, 179,375.82 and 82,278.80 is: 113,562.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,961.88 : 179,375.82 = 82,278.80 : x
  2. Step 2: Convert to fraction form
    129,961.88/179,375.82 = 82,278.80/x
  3. Step 3: Cross multiply
    129,961.88x = 179,375.82 × 82,278.80
  4. Step 4: Simplify right side
    129,961.88x = 14,758,827,218.62
  5. Step 5: Solve for x
    x = 14,758,827,218.62/129,961.88
  6. Step 6: Final answer
    x = 113,562.74

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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.