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Finding the Fourth Proportional to 83,983.80, 125,611.20 and 75,162.90

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Solution

The fourth proportional to 83,983.80, 125,611.20 and 75,162.90 is: 112,418.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,983.80 : 125,611.20 = 75,162.90 : x
  2. Step 2: Convert to fraction form
    83,983.80/125,611.20 = 75,162.90/x
  3. Step 3: Cross multiply
    83,983.80x = 125,611.20 × 75,162.90
  4. Step 4: Simplify right side
    83,983.80x = 9,441,302,064.48
  5. Step 5: Solve for x
    x = 9,441,302,064.48/83,983.80
  6. Step 6: Final answer
    x = 112,418.13

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1.5x scale

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.