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Finding the Fourth Proportional to 129,076.47, 177,640.16 and 109,194.75

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Solution

The fourth proportional to 129,076.47, 177,640.16 and 109,194.75 is: 150,278.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,076.47 : 177,640.16 = 109,194.75 : x
  2. Step 2: Convert to fraction form
    129,076.47/177,640.16 = 109,194.75/x
  3. Step 3: Cross multiply
    129,076.47x = 177,640.16 × 109,194.75
  4. Step 4: Simplify right side
    129,076.47x = 19,397,372,315.19
  5. Step 5: Solve for x
    x = 19,397,372,315.19/129,076.47
  6. Step 6: Final answer
    x = 150,278.14

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