Home / 120,832.20-181,248.30-87,481.80

Finding the Fourth Proportional to 120,832.20, 181,248.30 and 87,481.80

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Solution

The fourth proportional to 120,832.20, 181,248.30 and 87,481.80 is: 131,222.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,832.20 : 181,248.30 = 87,481.80 : x
  2. Step 2: Convert to fraction form
    120,832.20/181,248.30 = 87,481.80/x
  3. Step 3: Cross multiply
    120,832.20x = 181,248.30 × 87,481.80
  4. Step 4: Simplify right side
    120,832.20x = 15,855,927,530.94
  5. Step 5: Solve for x
    x = 15,855,927,530.94/120,832.20
  6. Step 6: Final answer
    x = 131,222.70

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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.