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Finding the Fourth Proportional to 113.43, 170.10 and 77.37

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Solution

The fourth proportional to 113.43, 170.10 and 77.37 is: 116.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.43 : 170.10 = 77.37 : x
  2. Step 2: Convert to fraction form
    113.43/170.10 = 77.37/x
  3. Step 3: Cross multiply
    113.43x = 170.10 × 77.37
  4. Step 4: Simplify right side
    113.43x = 13,160.64
  5. Step 5: Solve for x
    x = 13,160.64/113.43
  6. Step 6: Final answer
    x = 116.02

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