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Finding the Fourth Proportional to 115.41, 159.12 and 97.86

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Solution

The fourth proportional to 115.41, 159.12 and 97.86 is: 134.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.41 : 159.12 = 97.86 : x
  2. Step 2: Convert to fraction form
    115.41/159.12 = 97.86/x
  3. Step 3: Cross multiply
    115.41x = 159.12 × 97.86
  4. Step 4: Simplify right side
    115.41x = 15,571.48
  5. Step 5: Solve for x
    x = 15,571.48/115.41
  6. Step 6: Final answer
    x = 134.92

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