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Finding the Fourth Proportional to 212.63, 318.95 and 116.39

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Solution

The fourth proportional to 212.63, 318.95 and 116.39 is: 174.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.63 : 318.95 = 116.39 : x
  2. Step 2: Convert to fraction form
    212.63/318.95 = 116.39/x
  3. Step 3: Cross multiply
    212.63x = 318.95 × 116.39
  4. Step 4: Simplify right side
    212.63x = 37,122.01
  5. Step 5: Solve for x
    x = 37,122.01/212.63
  6. Step 6: Final answer
    x = 174.59

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