Home / 198,720.87-274,232.15-108,074.89

Finding the Fourth Proportional to 198,720.87, 274,232.15 and 108,074.89

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Solution

The fourth proportional to 198,720.87, 274,232.15 and 108,074.89 is: 149,141.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,720.87 : 274,232.15 = 108,074.89 : x
  2. Step 2: Convert to fraction form
    198,720.87/274,232.15 = 108,074.89/x
  3. Step 3: Cross multiply
    198,720.87x = 274,232.15 × 108,074.89
  4. Step 4: Simplify right side
    198,720.87x = 29,637,609,445.71
  5. Step 5: Solve for x
    x = 29,637,609,445.71/198,720.87
  6. Step 6: Final answer
    x = 149,141.91

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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.