Home / 167,921.40-231,728.20-91,441.43

Finding the Fourth Proportional to 167,921.40, 231,728.20 and 91,441.43

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Solution

The fourth proportional to 167,921.40, 231,728.20 and 91,441.43 is: 126,187.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,921.40 : 231,728.20 = 91,441.43 : x
  2. Step 2: Convert to fraction form
    167,921.40/231,728.20 = 91,441.43/x
  3. Step 3: Cross multiply
    167,921.40x = 231,728.20 × 91,441.43
  4. Step 4: Simplify right side
    167,921.40x = 21,189,557,979.33
  5. Step 5: Solve for x
    x = 21,189,557,979.33/167,921.40
  6. Step 6: Final answer
    x = 126,187.36

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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.