Home / 83,049.60-124,574.40-81,105.60

Finding the Fourth Proportional to 83,049.60, 124,574.40 and 81,105.60

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Solution

The fourth proportional to 83,049.60, 124,574.40 and 81,105.60 is: 121,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,049.60 : 124,574.40 = 81,105.60 : x
  2. Step 2: Convert to fraction form
    83,049.60/124,574.40 = 81,105.60/x
  3. Step 3: Cross multiply
    83,049.60x = 124,574.40 × 81,105.60
  4. Step 4: Simplify right side
    83,049.60x = 10,103,681,456.64
  5. Step 5: Solve for x
    x = 10,103,681,456.64/83,049.60
  6. Step 6: Final answer
    x = 121,658.40

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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.