Home / 198,917.29-274,512.81-108,280.72

Finding the Fourth Proportional to 198,917.29, 274,512.81 and 108,280.72

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Solution

The fourth proportional to 198,917.29, 274,512.81 and 108,280.72 is: 149,431.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,917.29 : 274,512.81 = 108,280.72 : x
  2. Step 2: Convert to fraction form
    198,917.29/274,512.81 = 108,280.72/x
  3. Step 3: Cross multiply
    198,917.29x = 274,512.81 × 108,280.72
  4. Step 4: Simplify right side
    198,917.29x = 29,724,444,716.02
  5. Step 5: Solve for x
    x = 29,724,444,716.02/198,917.29
  6. Step 6: Final answer
    x = 149,431.18

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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.