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Finding the Fourth Proportional to 198,876.80, 274,444.80 and 108,234.56

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Solution

The fourth proportional to 198,876.80, 274,444.80 and 108,234.56 is: 149,360.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,876.80 : 274,444.80 = 108,234.56 : x
  2. Step 2: Convert to fraction form
    198,876.80/274,444.80 = 108,234.56/x
  3. Step 3: Cross multiply
    198,876.80x = 274,444.80 × 108,234.56
  4. Step 4: Simplify right side
    198,876.80x = 29,704,412,172.29
  5. Step 5: Solve for x
    x = 29,704,412,172.29/198,876.80
  6. Step 6: Final answer
    x = 149,360.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.