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Finding the Fourth Proportional to 100,978.26, 151,467.75 and 30,857.28

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Solution

The fourth proportional to 100,978.26, 151,467.75 and 30,857.28 is: 46,286.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,978.26 : 151,467.75 = 30,857.28 : x
  2. Step 2: Convert to fraction form
    100,978.26/151,467.75 = 30,857.28/x
  3. Step 3: Cross multiply
    100,978.26x = 151,467.75 × 30,857.28
  4. Step 4: Simplify right side
    100,978.26x = 4,673,882,772.72
  5. Step 5: Solve for x
    x = 4,673,882,772.72/100,978.26
  6. Step 6: Final answer
    x = 46,286.03

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