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Finding the Fourth Proportional to 116.15, 174.06 and 81.83

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Solution

The fourth proportional to 116.15, 174.06 and 81.83 is: 122.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.15 : 174.06 = 81.83 : x
  2. Step 2: Convert to fraction form
    116.15/174.06 = 81.83/x
  3. Step 3: Cross multiply
    116.15x = 174.06 × 81.83
  4. Step 4: Simplify right side
    116.15x = 14,242.46
  5. Step 5: Solve for x
    x = 14,242.46/116.15
  6. Step 6: Final answer
    x = 122.63

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