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Finding the Fourth Proportional to 191,450.25, 287,306.60 and 66,791.25

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Solution

The fourth proportional to 191,450.25, 287,306.60 and 66,791.25 is: 100,232.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,450.25 : 287,306.60 = 66,791.25 : x
  2. Step 2: Convert to fraction form
    191,450.25/287,306.60 = 66,791.25/x
  3. Step 3: Cross multiply
    191,450.25x = 287,306.60 × 66,791.25
  4. Step 4: Simplify right side
    191,450.25x = 19,189,566,613.29
  5. Step 5: Solve for x
    x = 19,189,566,613.29/191,450.25
  6. Step 6: Final answer
    x = 100,232.65

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