Home / 120,524.15-180,765.68-31,778.53

Finding the Fourth Proportional to 120,524.15, 180,765.68 and 31,778.53

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Solution

The fourth proportional to 120,524.15, 180,765.68 and 31,778.53 is: 47,662.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,524.15 : 180,765.68 = 31,778.53 : x
  2. Step 2: Convert to fraction form
    120,524.15/180,765.68 = 31,778.53/x
  3. Step 3: Cross multiply
    120,524.15x = 180,765.68 × 31,778.53
  4. Step 4: Simplify right side
    120,524.15x = 5,744,466,974.04
  5. Step 5: Solve for x
    x = 5,744,466,974.04/120,524.15
  6. Step 6: Final answer
    x = 47,662.37

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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.