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Finding the Fourth Proportional to 80,863.90, 121,295.85 and 79,551.70

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Solution

The fourth proportional to 80,863.90, 121,295.85 and 79,551.70 is: 119,327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,863.90 : 121,295.85 = 79,551.70 : x
  2. Step 2: Convert to fraction form
    80,863.90/121,295.85 = 79,551.70/x
  3. Step 3: Cross multiply
    80,863.90x = 121,295.85 × 79,551.70
  4. Step 4: Simplify right side
    80,863.90x = 9,649,291,070.45
  5. Step 5: Solve for x
    x = 9,649,291,070.45/80,863.90
  6. Step 6: Final answer
    x = 119,327.55

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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.