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Finding the Fourth Proportional to 116.86, 175.28 and 43.72

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Solution

The fourth proportional to 116.86, 175.28 and 43.72 is: 65.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.86 : 175.28 = 43.72 : x
  2. Step 2: Convert to fraction form
    116.86/175.28 = 43.72/x
  3. Step 3: Cross multiply
    116.86x = 175.28 × 43.72
  4. Step 4: Simplify right side
    116.86x = 7,663.57
  5. Step 5: Solve for x
    x = 7,663.57/116.86
  6. Step 6: Final answer
    x = 65.58

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