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Finding the Fourth Proportional to 106.95, 160.39 and 89.94

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Solution

The fourth proportional to 106.95, 160.39 and 89.94 is: 134.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.95 : 160.39 = 89.94 : x
  2. Step 2: Convert to fraction form
    106.95/160.39 = 89.94/x
  3. Step 3: Cross multiply
    106.95x = 160.39 × 89.94
  4. Step 4: Simplify right side
    106.95x = 14,425.48
  5. Step 5: Solve for x
    x = 14,425.48/106.95
  6. Step 6: Final answer
    x = 134.88

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