Home / 80,111.31-120,175.19-30,233.40

Finding the Fourth Proportional to 80,111.31, 120,175.19 and 30,233.40

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Solution

The fourth proportional to 80,111.31, 120,175.19 and 30,233.40 is: 45,353.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,111.31 : 120,175.19 = 30,233.40 : x
  2. Step 2: Convert to fraction form
    80,111.31/120,175.19 = 30,233.40/x
  3. Step 3: Cross multiply
    80,111.31x = 120,175.19 × 30,233.40
  4. Step 4: Simplify right side
    80,111.31x = 3,633,304,589.35
  5. Step 5: Solve for x
    x = 3,633,304,589.35/80,111.31
  6. Step 6: Final answer
    x = 45,353.20

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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.