Home / 80,219.46-120,214.38-45,085.31

Finding the Fourth Proportional to 80,219.46, 120,214.38 and 45,085.31

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Solution

The fourth proportional to 80,219.46, 120,214.38 and 45,085.31 is: 67,563.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,219.46 : 120,214.38 = 45,085.31 : x
  2. Step 2: Convert to fraction form
    80,219.46/120,214.38 = 45,085.31/x
  3. Step 3: Cross multiply
    80,219.46x = 120,214.38 × 45,085.31
  4. Step 4: Simplify right side
    80,219.46x = 5,419,902,353.95
  5. Step 5: Solve for x
    x = 5,419,902,353.95/80,219.46
  6. Step 6: Final answer
    x = 67,563.43

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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.