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Finding the Fourth Proportional to 190.52, 285.79 and 103.92

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Solution

The fourth proportional to 190.52, 285.79 and 103.92 is: 155.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.52 : 285.79 = 103.92 : x
  2. Step 2: Convert to fraction form
    190.52/285.79 = 103.92/x
  3. Step 3: Cross multiply
    190.52x = 285.79 × 103.92
  4. Step 4: Simplify right side
    190.52x = 29,699.30
  5. Step 5: Solve for x
    x = 29,699.30/190.52
  6. Step 6: Final answer
    x = 155.89

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