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Finding the Fourth Proportional to 100,415.52, 138,568.74 and 55,092.48

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Solution

The fourth proportional to 100,415.52, 138,568.74 and 55,092.48 is: 76,025.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,415.52 : 138,568.74 = 55,092.48 : x
  2. Step 2: Convert to fraction form
    100,415.52/138,568.74 = 55,092.48/x
  3. Step 3: Cross multiply
    100,415.52x = 138,568.74 × 55,092.48
  4. Step 4: Simplify right side
    100,415.52x = 7,634,095,537.08
  5. Step 5: Solve for x
    x = 7,634,095,537.08/100,415.52
  6. Step 6: Final answer
    x = 76,025.06

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