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Finding the Fourth Proportional to 127.06, 189.61 and 113.43

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Solution

The fourth proportional to 127.06, 189.61 and 113.43 is: 169.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.06 : 189.61 = 113.43 : x
  2. Step 2: Convert to fraction form
    127.06/189.61 = 113.43/x
  3. Step 3: Cross multiply
    127.06x = 189.61 × 113.43
  4. Step 4: Simplify right side
    127.06x = 21,507.46
  5. Step 5: Solve for x
    x = 21,507.46/127.06
  6. Step 6: Final answer
    x = 169.27

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