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Finding the Fourth Proportional to 199,069.80, 298,604.70 and 80,680.20

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Solution

The fourth proportional to 199,069.80, 298,604.70 and 80,680.20 is: 121,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,069.80 : 298,604.70 = 80,680.20 : x
  2. Step 2: Convert to fraction form
    199,069.80/298,604.70 = 80,680.20/x
  3. Step 3: Cross multiply
    199,069.80x = 298,604.70 × 80,680.20
  4. Step 4: Simplify right side
    199,069.80x = 24,091,486,916.94
  5. Step 5: Solve for x
    x = 24,091,486,916.94/199,069.80
  6. Step 6: Final answer
    x = 121,020.30

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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.