Home / 131,540.80-197,311.20-84,301.60

Finding the Fourth Proportional to 131,540.80, 197,311.20 and 84,301.60

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Solution

The fourth proportional to 131,540.80, 197,311.20 and 84,301.60 is: 126,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,540.80 : 197,311.20 = 84,301.60 : x
  2. Step 2: Convert to fraction form
    131,540.80/197,311.20 = 84,301.60/x
  3. Step 3: Cross multiply
    131,540.80x = 197,311.20 × 84,301.60
  4. Step 4: Simplify right side
    131,540.80x = 16,633,649,857.92
  5. Step 5: Solve for x
    x = 16,633,649,857.92/131,540.80
  6. Step 6: Final answer
    x = 126,452.40

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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.