Home / 198,971.17-274,578.53-108,326.90

Finding the Fourth Proportional to 198,971.17, 274,578.53 and 108,326.90

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Solution

The fourth proportional to 198,971.17, 274,578.53 and 108,326.90 is: 149,490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,971.17 : 274,578.53 = 108,326.90 : x
  2. Step 2: Convert to fraction form
    198,971.17/274,578.53 = 108,326.90/x
  3. Step 3: Cross multiply
    198,971.17x = 274,578.53 × 108,326.90
  4. Step 4: Simplify right side
    198,971.17x = 29,744,241,106.27
  5. Step 5: Solve for x
    x = 29,744,241,106.27/198,971.17
  6. Step 6: Final answer
    x = 149,490.21

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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.