Home / 129,375.33-194,051.87-78,761.22

Finding the Fourth Proportional to 129,375.33, 194,051.87 and 78,761.22

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Solution

The fourth proportional to 129,375.33, 194,051.87 and 78,761.22 is: 118,135.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,375.33 : 194,051.87 = 78,761.22 : x
  2. Step 2: Convert to fraction form
    129,375.33/194,051.87 = 78,761.22/x
  3. Step 3: Cross multiply
    129,375.33x = 194,051.87 × 78,761.22
  4. Step 4: Simplify right side
    129,375.33x = 15,283,762,024.48
  5. Step 5: Solve for x
    x = 15,283,762,024.48/129,375.33
  6. Step 6: Final answer
    x = 118,135.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.