Home / 198,771.76-274,305.96-108,128.56

Finding the Fourth Proportional to 198,771.76, 274,305.96 and 108,128.56

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Solution

The fourth proportional to 198,771.76, 274,305.96 and 108,128.56 is: 149,217.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,771.76 : 274,305.96 = 108,128.56 : x
  2. Step 2: Convert to fraction form
    198,771.76/274,305.96 = 108,128.56/x
  3. Step 3: Cross multiply
    198,771.76x = 274,305.96 × 108,128.56
  4. Step 4: Simplify right side
    198,771.76x = 29,660,308,454.22
  5. Step 5: Solve for x
    x = 29,660,308,454.22/198,771.76
  6. Step 6: Final answer
    x = 149,217.92

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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.