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Finding the Fourth Proportional to 188.11, 282.71 and 91.99

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Solution

The fourth proportional to 188.11, 282.71 and 91.99 is: 138.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.11 : 282.71 = 91.99 : x
  2. Step 2: Convert to fraction form
    188.11/282.71 = 91.99/x
  3. Step 3: Cross multiply
    188.11x = 282.71 × 91.99
  4. Step 4: Simplify right side
    188.11x = 26,006.49
  5. Step 5: Solve for x
    x = 26,006.49/188.11
  6. Step 6: Final answer
    x = 138.25

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