Home / 198,449.12-273,869.30-121,971.56

Finding the Fourth Proportional to 198,449.12, 273,869.30 and 121,971.56

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Solution

The fourth proportional to 198,449.12, 273,869.30 and 121,971.56 is: 168,326.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,449.12 : 273,869.30 = 121,971.56 : x
  2. Step 2: Convert to fraction form
    198,449.12/273,869.30 = 121,971.56/x
  3. Step 3: Cross multiply
    198,449.12x = 273,869.30 × 121,971.56
  4. Step 4: Simplify right side
    198,449.12x = 33,404,264,692.69
  5. Step 5: Solve for x
    x = 33,404,264,692.69/198,449.12
  6. Step 6: Final answer
    x = 168,326.59

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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.