Home / 120,636.27-180,912.42-49,538.70

Finding the Fourth Proportional to 120,636.27, 180,912.42 and 49,538.70

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Solution

The fourth proportional to 120,636.27, 180,912.42 and 49,538.70 is: 74,290.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,636.27 : 180,912.42 = 49,538.70 : x
  2. Step 2: Convert to fraction form
    120,636.27/180,912.42 = 49,538.70/x
  3. Step 3: Cross multiply
    120,636.27x = 180,912.42 × 49,538.70
  4. Step 4: Simplify right side
    120,636.27x = 8,962,166,100.65
  5. Step 5: Solve for x
    x = 8,962,166,100.65/120,636.27
  6. Step 6: Final answer
    x = 74,290.81

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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.