Home / 80,843.22-121,327.10-65,086.80

Finding the Fourth Proportional to 80,843.22, 121,327.10 and 65,086.80

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Solution

The fourth proportional to 80,843.22, 121,327.10 and 65,086.80 is: 97,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,843.22 : 121,327.10 = 65,086.80 : x
  2. Step 2: Convert to fraction form
    80,843.22/121,327.10 = 65,086.80/x
  3. Step 3: Cross multiply
    80,843.22x = 121,327.10 × 65,086.80
  4. Step 4: Simplify right side
    80,843.22x = 7,896,792,366.85
  5. Step 5: Solve for x
    x = 7,896,792,366.85/80,843.22
  6. Step 6: Final answer
    x = 97,680.33

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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.