Home / 80,197.29-120,241.26-40,678.20

Finding the Fourth Proportional to 80,197.29, 120,241.26 and 40,678.20

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Solution

The fourth proportional to 80,197.29, 120,241.26 and 40,678.20 is: 60,989.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,197.29 : 120,241.26 = 40,678.20 : x
  2. Step 2: Convert to fraction form
    80,197.29/120,241.26 = 40,678.20/x
  3. Step 3: Cross multiply
    80,197.29x = 120,241.26 × 40,678.20
  4. Step 4: Simplify right side
    80,197.29x = 4,891,198,022.53
  5. Step 5: Solve for x
    x = 4,891,198,022.53/80,197.29
  6. Step 6: Final answer
    x = 60,989.57

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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.