Home / 198,919.73-274,515.95-108,279

Finding the Fourth Proportional to 198,919.73, 274,515.95 and 108,279

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Solution

The fourth proportional to 198,919.73, 274,515.95 and 108,279 is: 149,428.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,919.73 : 274,515.95 = 108,279 : x
  2. Step 2: Convert to fraction form
    198,919.73/274,515.95 = 108,279/x
  3. Step 3: Cross multiply
    198,919.73x = 274,515.95 × 108,279
  4. Step 4: Simplify right side
    198,919.73x = 29,724,312,820.75
  5. Step 5: Solve for x
    x = 29,724,312,820.75/198,919.73
  6. Step 6: Final answer
    x = 149,428.68

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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.