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Finding the Fourth Proportional to 199,079.56, 298,608.54 and 80,719.12

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Solution

The fourth proportional to 199,079.56, 298,608.54 and 80,719.12 is: 121,074.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,079.56 : 298,608.54 = 80,719.12 : x
  2. Step 2: Convert to fraction form
    199,079.56/298,608.54 = 80,719.12/x
  3. Step 3: Cross multiply
    199,079.56x = 298,608.54 × 80,719.12
  4. Step 4: Simplify right side
    199,079.56x = 24,103,418,573.28
  5. Step 5: Solve for x
    x = 24,103,418,573.28/199,079.56
  6. Step 6: Final answer
    x = 121,074.30

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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.