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Finding the Fourth Proportional to 74,298.15, 111,446.82 and 18,138.55

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Solution

The fourth proportional to 74,298.15, 111,446.82 and 18,138.55 is: 27,207.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,298.15 : 111,446.82 = 18,138.55 : x
  2. Step 2: Convert to fraction form
    74,298.15/111,446.82 = 18,138.55/x
  3. Step 3: Cross multiply
    74,298.15x = 111,446.82 × 18,138.55
  4. Step 4: Simplify right side
    74,298.15x = 2,021,483,716.91
  5. Step 5: Solve for x
    x = 2,021,483,716.91/74,298.15
  6. Step 6: Final answer
    x = 27,207.73

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