Home / 198,808.78-274,353.10-108,162.68

Finding the Fourth Proportional to 198,808.78, 274,353.10 and 108,162.68

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Solution

The fourth proportional to 198,808.78, 274,353.10 and 108,162.68 is: 149,262.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,808.78 : 274,353.10 = 108,162.68 : x
  2. Step 2: Convert to fraction form
    198,808.78/274,353.10 = 108,162.68/x
  3. Step 3: Cross multiply
    198,808.78x = 274,353.10 × 108,162.68
  4. Step 4: Simplify right side
    198,808.78x = 29,674,766,562.31
  5. Step 5: Solve for x
    x = 29,674,766,562.31/198,808.78
  6. Step 6: Final answer
    x = 149,262.86

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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.