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Finding the Fourth Proportional to 91.04, 136.58 and 74.97

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Solution

The fourth proportional to 91.04, 136.58 and 74.97 is: 112.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.04 : 136.58 = 74.97 : x
  2. Step 2: Convert to fraction form
    91.04/136.58 = 74.97/x
  3. Step 3: Cross multiply
    91.04x = 136.58 × 74.97
  4. Step 4: Simplify right side
    91.04x = 10,239.03
  5. Step 5: Solve for x
    x = 10,239.03/91.04
  6. Step 6: Final answer
    x = 112.47

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