Home / 198,720.77-274,231.98-108,074.78

Finding the Fourth Proportional to 198,720.77, 274,231.98 and 108,074.78

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Solution

The fourth proportional to 198,720.77, 274,231.98 and 108,074.78 is: 149,141.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,720.77 : 274,231.98 = 108,074.78 : x
  2. Step 2: Convert to fraction form
    198,720.77/274,231.98 = 108,074.78/x
  3. Step 3: Cross multiply
    198,720.77x = 274,231.98 × 108,074.78
  4. Step 4: Simplify right side
    198,720.77x = 29,637,561,335.95
  5. Step 5: Solve for x
    x = 29,637,561,335.95/198,720.77
  6. Step 6: Final answer
    x = 149,141.74

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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.