Home / 91,902.20-137,853.30-83,445.80

Finding the Fourth Proportional to 91,902.20, 137,853.30 and 83,445.80

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Solution

The fourth proportional to 91,902.20, 137,853.30 and 83,445.80 is: 125,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,902.20 : 137,853.30 = 83,445.80 : x
  2. Step 2: Convert to fraction form
    91,902.20/137,853.30 = 83,445.80/x
  3. Step 3: Cross multiply
    91,902.20x = 137,853.30 × 83,445.80
  4. Step 4: Simplify right side
    91,902.20x = 11,503,278,901.14
  5. Step 5: Solve for x
    x = 11,503,278,901.14/91,902.20
  6. Step 6: Final answer
    x = 125,168.70

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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.