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Finding the Fourth Proportional to 206,095.60, 309,164.28 and 71,142.08

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Solution

The fourth proportional to 206,095.60, 309,164.28 and 71,142.08 is: 106,720.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,095.60 : 309,164.28 = 71,142.08 : x
  2. Step 2: Convert to fraction form
    206,095.60/309,164.28 = 71,142.08/x
  3. Step 3: Cross multiply
    206,095.60x = 309,164.28 × 71,142.08
  4. Step 4: Simplify right side
    206,095.60x = 21,994,589,940.90
  5. Step 5: Solve for x
    x = 21,994,589,940.90/206,095.60
  6. Step 6: Final answer
    x = 106,720.33

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