Home / 198,612.72-274,087.44-107,969.76

Finding the Fourth Proportional to 198,612.72, 274,087.44 and 107,969.76

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Solution

The fourth proportional to 198,612.72, 274,087.44 and 107,969.76 is: 148,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,612.72 : 274,087.44 = 107,969.76 : x
  2. Step 2: Convert to fraction form
    198,612.72/274,087.44 = 107,969.76/x
  3. Step 3: Cross multiply
    198,612.72x = 274,087.44 × 107,969.76
  4. Step 4: Simplify right side
    198,612.72x = 29,593,155,115.81
  5. Step 5: Solve for x
    x = 29,593,155,115.81/198,612.72
  6. Step 6: Final answer
    x = 148,999.29

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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.