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Finding the Fourth Proportional to 199,368.78, 275,150.26 and 121,889.89

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Solution

The fourth proportional to 199,368.78, 275,150.26 and 121,889.89 is: 168,221.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,368.78 : 275,150.26 = 121,889.89 : x
  2. Step 2: Convert to fraction form
    199,368.78/275,150.26 = 121,889.89/x
  3. Step 3: Cross multiply
    199,368.78x = 275,150.26 × 121,889.89
  4. Step 4: Simplify right side
    199,368.78x = 33,538,034,924.87
  5. Step 5: Solve for x
    x = 33,538,034,924.87/199,368.78
  6. Step 6: Final answer
    x = 168,221.10

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