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Finding the Fourth Proportional to 187.63, 258.91 and 107.87

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Solution

The fourth proportional to 187.63, 258.91 and 107.87 is: 148.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.63 : 258.91 = 107.87 : x
  2. Step 2: Convert to fraction form
    187.63/258.91 = 107.87/x
  3. Step 3: Cross multiply
    187.63x = 258.91 × 107.87
  4. Step 4: Simplify right side
    187.63x = 27,929.00
  5. Step 5: Solve for x
    x = 27,929.00/187.63
  6. Step 6: Final answer
    x = 148.85

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