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Finding the Fourth Proportional to 198,990.88, 274,604.67 and 108,346.84

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Solution

The fourth proportional to 198,990.88, 274,604.67 and 108,346.84 is: 149,517.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,990.88 : 274,604.67 = 108,346.84 : x
  2. Step 2: Convert to fraction form
    198,990.88/274,604.67 = 108,346.84/x
  3. Step 3: Cross multiply
    198,990.88x = 274,604.67 × 108,346.84
  4. Step 4: Simplify right side
    198,990.88x = 29,752,547,702.01
  5. Step 5: Solve for x
    x = 29,752,547,702.01/198,990.88
  6. Step 6: Final answer
    x = 149,517.15

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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.