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Finding the Fourth Proportional to 83,902.90, 125,854.35 and 80,677.30

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Solution

The fourth proportional to 83,902.90, 125,854.35 and 80,677.30 is: 121,015.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,902.90 : 125,854.35 = 80,677.30 : x
  2. Step 2: Convert to fraction form
    83,902.90/125,854.35 = 80,677.30/x
  3. Step 3: Cross multiply
    83,902.90x = 125,854.35 × 80,677.30
  4. Step 4: Simplify right side
    83,902.90x = 10,153,589,151.26
  5. Step 5: Solve for x
    x = 10,153,589,151.26/83,902.90
  6. Step 6: Final answer
    x = 121,015.95

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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.