Home / 83,902.20-125,999.10-81,277.80

Finding the Fourth Proportional to 83,902.20, 125,999.10 and 81,277.80

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Solution

The fourth proportional to 83,902.20, 125,999.10 and 81,277.80 is: 122,057.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,902.20 : 125,999.10 = 81,277.80 : x
  2. Step 2: Convert to fraction form
    83,902.20/125,999.10 = 81,277.80/x
  3. Step 3: Cross multiply
    83,902.20x = 125,999.10 × 81,277.80
  4. Step 4: Simplify right side
    83,902.20x = 10,240,929,649.98
  5. Step 5: Solve for x
    x = 10,240,929,649.98/83,902.20
  6. Step 6: Final answer
    x = 122,057.94

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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.