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Finding the Fourth Proportional to 104.44, 143.95 and 71.64

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Solution

The fourth proportional to 104.44, 143.95 and 71.64 is: 98.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.44 : 143.95 = 71.64 : x
  2. Step 2: Convert to fraction form
    104.44/143.95 = 71.64/x
  3. Step 3: Cross multiply
    104.44x = 143.95 × 71.64
  4. Step 4: Simplify right side
    104.44x = 10,312.58
  5. Step 5: Solve for x
    x = 10,312.58/104.44
  6. Step 6: Final answer
    x = 98.74

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