Home / 80,131.54-120,205.38-20,967.70

Finding the Fourth Proportional to 80,131.54, 120,205.38 and 20,967.70

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Solution

The fourth proportional to 80,131.54, 120,205.38 and 20,967.70 is: 31,453.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,131.54 : 120,205.38 = 20,967.70 : x
  2. Step 2: Convert to fraction form
    80,131.54/120,205.38 = 20,967.70/x
  3. Step 3: Cross multiply
    80,131.54x = 120,205.38 × 20,967.70
  4. Step 4: Simplify right side
    80,131.54x = 2,520,430,346.23
  5. Step 5: Solve for x
    x = 2,520,430,346.23/80,131.54
  6. Step 6: Final answer
    x = 31,453.66

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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.