Home / 83,705.40-125,397.72-80,891.46

Finding the Fourth Proportional to 83,705.40, 125,397.72 and 80,891.46

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Solution

The fourth proportional to 83,705.40, 125,397.72 and 80,891.46 is: 121,182.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,705.40 : 125,397.72 = 80,891.46 : x
  2. Step 2: Convert to fraction form
    83,705.40/125,397.72 = 80,891.46/x
  3. Step 3: Cross multiply
    83,705.40x = 125,397.72 × 80,891.46
  4. Step 4: Simplify right side
    83,705.40x = 10,143,604,651.47
  5. Step 5: Solve for x
    x = 10,143,604,651.47/83,705.40
  6. Step 6: Final answer
    x = 121,182.20

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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.