Home / 198,970.91-274,578.18-108,326.64

Finding the Fourth Proportional to 198,970.91, 274,578.18 and 108,326.64

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Solution

The fourth proportional to 198,970.91, 274,578.18 and 108,326.64 is: 149,489.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,970.91 : 274,578.18 = 108,326.64 : x
  2. Step 2: Convert to fraction form
    198,970.91/274,578.18 = 108,326.64/x
  3. Step 3: Cross multiply
    198,970.91x = 274,578.18 × 108,326.64
  4. Step 4: Simplify right side
    198,970.91x = 29,744,131,656.72
  5. Step 5: Solve for x
    x = 29,744,131,656.72/198,970.91
  6. Step 6: Final answer
    x = 149,489.85

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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.