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Finding the Fourth Proportional to 115.47, 159.32 and 68.83

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Solution

The fourth proportional to 115.47, 159.32 and 68.83 is: 94.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.47 : 159.32 = 68.83 : x
  2. Step 2: Convert to fraction form
    115.47/159.32 = 68.83/x
  3. Step 3: Cross multiply
    115.47x = 159.32 × 68.83
  4. Step 4: Simplify right side
    115.47x = 10,965.77
  5. Step 5: Solve for x
    x = 10,965.77/115.47
  6. Step 6: Final answer
    x = 94.97

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