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Finding the Fourth Proportional to 112.53, 167.97 and 85.35

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Solution

The fourth proportional to 112.53, 167.97 and 85.35 is: 127.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.53 : 167.97 = 85.35 : x
  2. Step 2: Convert to fraction form
    112.53/167.97 = 85.35/x
  3. Step 3: Cross multiply
    112.53x = 167.97 × 85.35
  4. Step 4: Simplify right side
    112.53x = 14,336.24
  5. Step 5: Solve for x
    x = 14,336.24/112.53
  6. Step 6: Final answer
    x = 127.40

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