Home / 87,465.40-131,198.10-80,207.80

Finding the Fourth Proportional to 87,465.40, 131,198.10 and 80,207.80

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Solution

The fourth proportional to 87,465.40, 131,198.10 and 80,207.80 is: 120,311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,465.40 : 131,198.10 = 80,207.80 : x
  2. Step 2: Convert to fraction form
    87,465.40/131,198.10 = 80,207.80/x
  3. Step 3: Cross multiply
    87,465.40x = 131,198.10 × 80,207.80
  4. Step 4: Simplify right side
    87,465.40x = 10,523,110,965.18
  5. Step 5: Solve for x
    x = 10,523,110,965.18/87,465.40
  6. Step 6: Final answer
    x = 120,311.70

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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.