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Finding the Fourth Proportional to 136.94, 188.84 and 104.19

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Solution

The fourth proportional to 136.94, 188.84 and 104.19 is: 143.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.94 : 188.84 = 104.19 : x
  2. Step 2: Convert to fraction form
    136.94/188.84 = 104.19/x
  3. Step 3: Cross multiply
    136.94x = 188.84 × 104.19
  4. Step 4: Simplify right side
    136.94x = 19,674.72
  5. Step 5: Solve for x
    x = 19,674.72/136.94
  6. Step 6: Final answer
    x = 143.68

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