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Finding the Fourth Proportional to 198,726, 274,242.60 and 108,081.96

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Solution

The fourth proportional to 198,726, 274,242.60 and 108,081.96 is: 149,153.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,726 : 274,242.60 = 108,081.96 : x
  2. Step 2: Convert to fraction form
    198,726/274,242.60 = 108,081.96/x
  3. Step 3: Cross multiply
    198,726x = 274,242.60 × 108,081.96
  4. Step 4: Simplify right side
    198,726x = 29,640,677,723.50
  5. Step 5: Solve for x
    x = 29,640,677,723.50/198,726
  6. Step 6: Final answer
    x = 149,153.50

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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.