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Finding the Fourth Proportional to 135.04, 186.36 and 76.81

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Solution

The fourth proportional to 135.04, 186.36 and 76.81 is: 106.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.04 : 186.36 = 76.81 : x
  2. Step 2: Convert to fraction form
    135.04/186.36 = 76.81/x
  3. Step 3: Cross multiply
    135.04x = 186.36 × 76.81
  4. Step 4: Simplify right side
    135.04x = 14,314.78
  5. Step 5: Solve for x
    x = 14,314.78/135.04
  6. Step 6: Final answer
    x = 106.00

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