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Finding the Fourth Proportional to 167,438, 231,064.54 and 91,991.36

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Solution

The fourth proportional to 167,438, 231,064.54 and 91,991.36 is: 126,948.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,438 : 231,064.54 = 91,991.36 : x
  2. Step 2: Convert to fraction form
    167,438/231,064.54 = 91,991.36/x
  3. Step 3: Cross multiply
    167,438x = 231,064.54 × 91,991.36
  4. Step 4: Simplify right side
    167,438x = 21,255,941,282.37
  5. Step 5: Solve for x
    x = 21,255,941,282.37/167,438
  6. Step 6: Final answer
    x = 126,948.13

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.