Home / 129,470.20-194,205.30-40,750.90

Finding the Fourth Proportional to 129,470.20, 194,205.30 and 40,750.90

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Solution

The fourth proportional to 129,470.20, 194,205.30 and 40,750.90 is: 61,126.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,470.20 : 194,205.30 = 40,750.90 : x
  2. Step 2: Convert to fraction form
    129,470.20/194,205.30 = 40,750.90/x
  3. Step 3: Cross multiply
    129,470.20x = 194,205.30 × 40,750.90
  4. Step 4: Simplify right side
    129,470.20x = 7,914,040,759.77
  5. Step 5: Solve for x
    x = 7,914,040,759.77/129,470.20
  6. Step 6: Final answer
    x = 61,126.35

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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.