Home / 83,123.12-124,684.68-20,793.62

Finding the Fourth Proportional to 83,123.12, 124,684.68 and 20,793.62

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Solution

The fourth proportional to 83,123.12, 124,684.68 and 20,793.62 is: 31,190.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,123.12 : 124,684.68 = 20,793.62 : x
  2. Step 2: Convert to fraction form
    83,123.12/124,684.68 = 20,793.62/x
  3. Step 3: Cross multiply
    83,123.12x = 124,684.68 × 20,793.62
  4. Step 4: Simplify right side
    83,123.12x = 2,592,645,855.74
  5. Step 5: Solve for x
    x = 2,592,645,855.74/83,123.12
  6. Step 6: Final answer
    x = 31,190.43

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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.