Home / 198,861.53-274,432.22-108,221.31

Finding the Fourth Proportional to 198,861.53, 274,432.22 and 108,221.31

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Solution

The fourth proportional to 198,861.53, 274,432.22 and 108,221.31 is: 149,347.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,861.53 : 274,432.22 = 108,221.31 : x
  2. Step 2: Convert to fraction form
    198,861.53/274,432.22 = 108,221.31/x
  3. Step 3: Cross multiply
    198,861.53x = 274,432.22 × 108,221.31
  4. Step 4: Simplify right side
    198,861.53x = 29,699,413,813.50
  5. Step 5: Solve for x
    x = 29,699,413,813.50/198,861.53
  6. Step 6: Final answer
    x = 149,347.21

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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.