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Finding the Fourth Proportional to 157,839.33, 217,889.99 and 100,557.21

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Solution

The fourth proportional to 157,839.33, 217,889.99 and 100,557.21 is: 138,814.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,839.33 : 217,889.99 = 100,557.21 : x
  2. Step 2: Convert to fraction form
    157,839.33/217,889.99 = 100,557.21/x
  3. Step 3: Cross multiply
    157,839.33x = 217,889.99 × 100,557.21
  4. Step 4: Simplify right side
    157,839.33x = 21,910,409,481.33
  5. Step 5: Solve for x
    x = 21,910,409,481.33/157,839.33
  6. Step 6: Final answer
    x = 138,814.64

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