Home / 198,916.29-274,511.43-108,279.72

Finding the Fourth Proportional to 198,916.29, 274,511.43 and 108,279.72

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Solution

The fourth proportional to 198,916.29, 274,511.43 and 108,279.72 is: 149,429.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,916.29 : 274,511.43 = 108,279.72 : x
  2. Step 2: Convert to fraction form
    198,916.29/274,511.43 = 108,279.72/x
  3. Step 3: Cross multiply
    198,916.29x = 274,511.43 × 108,279.72
  4. Step 4: Simplify right side
    198,916.29x = 29,724,020,777.20
  5. Step 5: Solve for x
    x = 29,724,020,777.20/198,916.29
  6. Step 6: Final answer
    x = 149,429.80

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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.