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Finding the Fourth Proportional to 130.79, 195.86 and 76.52

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Solution

The fourth proportional to 130.79, 195.86 and 76.52 is: 114.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.79 : 195.86 = 76.52 : x
  2. Step 2: Convert to fraction form
    130.79/195.86 = 76.52/x
  3. Step 3: Cross multiply
    130.79x = 195.86 × 76.52
  4. Step 4: Simplify right side
    130.79x = 14,986.42
  5. Step 5: Solve for x
    x = 14,986.42/130.79
  6. Step 6: Final answer
    x = 114.59

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