Home / 120,321.81-180,446.25-50,184.72

Finding the Fourth Proportional to 120,321.81, 180,446.25 and 50,184.72

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Solution

The fourth proportional to 120,321.81, 180,446.25 and 50,184.72 is: 75,261.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,321.81 : 180,446.25 = 50,184.72 : x
  2. Step 2: Convert to fraction form
    120,321.81/180,446.25 = 50,184.72/x
  3. Step 3: Cross multiply
    120,321.81x = 180,446.25 × 50,184.72
  4. Step 4: Simplify right side
    120,321.81x = 9,055,644,531.30
  5. Step 5: Solve for x
    x = 9,055,644,531.30/120,321.81
  6. Step 6: Final answer
    x = 75,261.87

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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.