Home / 80,119.24-120,168.39-20,959.45

Finding the Fourth Proportional to 80,119.24, 120,168.39 and 20,959.45

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Solution

The fourth proportional to 80,119.24, 120,168.39 and 20,959.45 is: 31,436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,119.24 : 120,168.39 = 20,959.45 : x
  2. Step 2: Convert to fraction form
    80,119.24/120,168.39 = 20,959.45/x
  3. Step 3: Cross multiply
    80,119.24x = 120,168.39 × 20,959.45
  4. Step 4: Simplify right side
    80,119.24x = 2,518,663,361.79
  5. Step 5: Solve for x
    x = 2,518,663,361.79/80,119.24
  6. Step 6: Final answer
    x = 31,436.44

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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.