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Finding the Fourth Proportional to 141, 211.30 and 68.80

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Solution

The fourth proportional to 141, 211.30 and 68.80 is: 103.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    141 : 211.30 = 68.80 : x
  2. Step 2: Convert to fraction form
    141/211.30 = 68.80/x
  3. Step 3: Cross multiply
    141x = 211.30 × 68.80
  4. Step 4: Simplify right side
    141x = 14,537.44
  5. Step 5: Solve for x
    x = 14,537.44/141
  6. Step 6: Final answer
    x = 103.10

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