Home / 129,373.48-194,049.11-78,759.37

Finding the Fourth Proportional to 129,373.48, 194,049.11 and 78,759.37

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Solution

The fourth proportional to 129,373.48, 194,049.11 and 78,759.37 is: 118,132.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,373.48 : 194,049.11 = 78,759.37 : x
  2. Step 2: Convert to fraction form
    129,373.48/194,049.11 = 78,759.37/x
  3. Step 3: Cross multiply
    129,373.48x = 194,049.11 × 78,759.37
  4. Step 4: Simplify right side
    129,373.48x = 15,283,186,281.90
  5. Step 5: Solve for x
    x = 15,283,186,281.90/129,373.48
  6. Step 6: Final answer
    x = 118,132.29

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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.