Home / 120,442.20-180,519.78-49,361.97

Finding the Fourth Proportional to 120,442.20, 180,519.78 and 49,361.97

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Solution

The fourth proportional to 120,442.20, 180,519.78 and 49,361.97 is: 73,984.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,442.20 : 180,519.78 = 49,361.97 : x
  2. Step 2: Convert to fraction form
    120,442.20/180,519.78 = 49,361.97/x
  3. Step 3: Cross multiply
    120,442.20x = 180,519.78 × 49,361.97
  4. Step 4: Simplify right side
    120,442.20x = 8,910,811,964.77
  5. Step 5: Solve for x
    x = 8,910,811,964.77/120,442.20
  6. Step 6: Final answer
    x = 73,984.13

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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.