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Finding the Fourth Proportional to 167,440, 231,067.30 and 91,993.36

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Solution

The fourth proportional to 167,440, 231,067.30 and 91,993.36 is: 126,950.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,440 : 231,067.30 = 91,993.36 : x
  2. Step 2: Convert to fraction form
    167,440/231,067.30 = 91,993.36/x
  3. Step 3: Cross multiply
    167,440x = 231,067.30 × 91,993.36
  4. Step 4: Simplify right side
    167,440x = 21,256,657,313.13
  5. Step 5: Solve for x
    x = 21,256,657,313.13/167,440
  6. Step 6: Final answer
    x = 126,950.89

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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.