Home / 198,625.80-274,103.10-107,981.76

Finding the Fourth Proportional to 198,625.80, 274,103.10 and 107,981.76

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Solution

The fourth proportional to 198,625.80, 274,103.10 and 107,981.76 is: 149,014.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,625.80 : 274,103.10 = 107,981.76 : x
  2. Step 2: Convert to fraction form
    198,625.80/274,103.10 = 107,981.76/x
  3. Step 3: Cross multiply
    198,625.80x = 274,103.10 × 107,981.76
  4. Step 4: Simplify right side
    198,625.80x = 29,598,135,159.46
  5. Step 5: Solve for x
    x = 29,598,135,159.46/198,625.80
  6. Step 6: Final answer
    x = 149,014.55

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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.