Home / 198,638.75-274,121.48-109,214.75

Finding the Fourth Proportional to 198,638.75, 274,121.48 and 109,214.75

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Solution

The fourth proportional to 198,638.75, 274,121.48 and 109,214.75 is: 150,716.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,638.75 : 274,121.48 = 109,214.75 : x
  2. Step 2: Convert to fraction form
    198,638.75/274,121.48 = 109,214.75/x
  3. Step 3: Cross multiply
    198,638.75x = 274,121.48 × 109,214.75
  4. Step 4: Simplify right side
    198,638.75x = 29,938,108,907.83
  5. Step 5: Solve for x
    x = 29,938,108,907.83/198,638.75
  6. Step 6: Final answer
    x = 150,716.36

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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.