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Finding the Fourth Proportional to 100,034.62, 138,042.12 and 54,703.60

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Solution

The fourth proportional to 100,034.62, 138,042.12 and 54,703.60 is: 75,487.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,034.62 : 138,042.12 = 54,703.60 : x
  2. Step 2: Convert to fraction form
    100,034.62/138,042.12 = 54,703.60/x
  3. Step 3: Cross multiply
    100,034.62x = 138,042.12 × 54,703.60
  4. Step 4: Simplify right side
    100,034.62x = 7,551,400,915.63
  5. Step 5: Solve for x
    x = 7,551,400,915.63/100,034.62
  6. Step 6: Final answer
    x = 75,487.88

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