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Finding the Fourth Proportional to 199,079.19, 298,741.50 and 80,751.56

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Solution

The fourth proportional to 199,079.19, 298,741.50 and 80,751.56 is: 121,177.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,079.19 : 298,741.50 = 80,751.56 : x
  2. Step 2: Convert to fraction form
    199,079.19/298,741.50 = 80,751.56/x
  3. Step 3: Cross multiply
    199,079.19x = 298,741.50 × 80,751.56
  4. Step 4: Simplify right side
    199,079.19x = 24,123,840,668.03
  5. Step 5: Solve for x
    x = 24,123,840,668.03/199,079.19
  6. Step 6: Final answer
    x = 121,177.11

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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.