Home / 141,079.12-194,694.88-77,419.20

Finding the Fourth Proportional to 141,079.12, 194,694.88 and 77,419.20

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Solution

The fourth proportional to 141,079.12, 194,694.88 and 77,419.20 is: 106,841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,079.12 : 194,694.88 = 77,419.20 : x
  2. Step 2: Convert to fraction form
    141,079.12/194,694.88 = 77,419.20/x
  3. Step 3: Cross multiply
    141,079.12x = 194,694.88 × 77,419.20
  4. Step 4: Simplify right side
    141,079.12x = 15,073,121,853.70
  5. Step 5: Solve for x
    x = 15,073,121,853.70/141,079.12
  6. Step 6: Final answer
    x = 106,841.62

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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.