Home / 80,181.06-120,236.04-42,734.18

Finding the Fourth Proportional to 80,181.06, 120,236.04 and 42,734.18

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Solution

The fourth proportional to 80,181.06, 120,236.04 and 42,734.18 is: 64,082.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,181.06 : 120,236.04 = 42,734.18 : x
  2. Step 2: Convert to fraction form
    80,181.06/120,236.04 = 42,734.18/x
  3. Step 3: Cross multiply
    80,181.06x = 120,236.04 × 42,734.18
  4. Step 4: Simplify right side
    80,181.06x = 5,138,187,974.67
  5. Step 5: Solve for x
    x = 5,138,187,974.67/80,181.06
  6. Step 6: Final answer
    x = 64,082.32

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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.