Home / 198,856.72-274,428.04-108,218.53

Finding the Fourth Proportional to 198,856.72, 274,428.04 and 108,218.53

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Solution

The fourth proportional to 198,856.72, 274,428.04 and 108,218.53 is: 149,344.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,856.72 : 274,428.04 = 108,218.53 : x
  2. Step 2: Convert to fraction form
    198,856.72/274,428.04 = 108,218.53/x
  3. Step 3: Cross multiply
    198,856.72x = 274,428.04 × 108,218.53
  4. Step 4: Simplify right side
    198,856.72x = 29,698,199,079.58
  5. Step 5: Solve for x
    x = 29,698,199,079.58/198,856.72
  6. Step 6: Final answer
    x = 149,344.71

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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.