Home / 120,738.20-181,099.20-31,989.80

Finding the Fourth Proportional to 120,738.20, 181,099.20 and 31,989.80

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Solution

The fourth proportional to 120,738.20, 181,099.20 and 31,989.80 is: 47,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,738.20 : 181,099.20 = 31,989.80 : x
  2. Step 2: Convert to fraction form
    120,738.20/181,099.20 = 31,989.80/x
  3. Step 3: Cross multiply
    120,738.20x = 181,099.20 × 31,989.80
  4. Step 4: Simplify right side
    120,738.20x = 5,793,327,188.16
  5. Step 5: Solve for x
    x = 5,793,327,188.16/120,738.20
  6. Step 6: Final answer
    x = 47,982.55

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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.