Home / 198,912.91-274,505.62-108,274.72

Finding the Fourth Proportional to 198,912.91, 274,505.62 and 108,274.72

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Solution

The fourth proportional to 198,912.91, 274,505.62 and 108,274.72 is: 149,422.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,912.91 : 274,505.62 = 108,274.72 : x
  2. Step 2: Convert to fraction form
    198,912.91/274,505.62 = 108,274.72/x
  3. Step 3: Cross multiply
    198,912.91x = 274,505.62 × 108,274.72
  4. Step 4: Simplify right side
    198,912.91x = 29,722,018,186.98
  5. Step 5: Solve for x
    x = 29,722,018,186.98/198,912.91
  6. Step 6: Final answer
    x = 149,422.27

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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.