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Finding the Fourth Proportional to 198,554.88, 274,007.85 and 107,910.85

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Solution

The fourth proportional to 198,554.88, 274,007.85 and 107,910.85 is: 148,918.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,554.88 : 274,007.85 = 107,910.85 : x
  2. Step 2: Convert to fraction form
    198,554.88/274,007.85 = 107,910.85/x
  3. Step 3: Cross multiply
    198,554.88x = 274,007.85 × 107,910.85
  4. Step 4: Simplify right side
    198,554.88x = 29,568,420,000.17
  5. Step 5: Solve for x
    x = 29,568,420,000.17/198,554.88
  6. Step 6: Final answer
    x = 148,918.12

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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.