Home / 80,876.20-121,314.30-73,877.80

Finding the Fourth Proportional to 80,876.20, 121,314.30 and 73,877.80

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Solution

The fourth proportional to 80,876.20, 121,314.30 and 73,877.80 is: 110,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,876.20 : 121,314.30 = 73,877.80 : x
  2. Step 2: Convert to fraction form
    80,876.20/121,314.30 = 73,877.80/x
  3. Step 3: Cross multiply
    80,876.20x = 121,314.30 × 73,877.80
  4. Step 4: Simplify right side
    80,876.20x = 8,962,433,592.54
  5. Step 5: Solve for x
    x = 8,962,433,592.54/80,876.20
  6. Step 6: Final answer
    x = 110,816.70

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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.