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Finding the Fourth Proportional to 117.24, 161.78 and 92.74

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Solution

The fourth proportional to 117.24, 161.78 and 92.74 is: 127.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.24 : 161.78 = 92.74 : x
  2. Step 2: Convert to fraction form
    117.24/161.78 = 92.74/x
  3. Step 3: Cross multiply
    117.24x = 161.78 × 92.74
  4. Step 4: Simplify right side
    117.24x = 15,003.48
  5. Step 5: Solve for x
    x = 15,003.48/117.24
  6. Step 6: Final answer
    x = 127.97

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