Home / 198,721.89-274,233.53-108,075.90

Finding the Fourth Proportional to 198,721.89, 274,233.53 and 108,075.90

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Solution

The fourth proportional to 198,721.89, 274,233.53 and 108,075.90 is: 149,143.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,721.89 : 274,233.53 = 108,075.90 : x
  2. Step 2: Convert to fraction form
    198,721.89/274,233.53 = 108,075.90/x
  3. Step 3: Cross multiply
    198,721.89x = 274,233.53 × 108,075.90
  4. Step 4: Simplify right side
    198,721.89x = 29,638,036,863.49
  5. Step 5: Solve for x
    x = 29,638,036,863.49/198,721.89
  6. Step 6: Final answer
    x = 149,143.29

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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.