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Finding the Fourth Proportional to 149,973, 206,962.70 and 81,990.26

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Solution

The fourth proportional to 149,973, 206,962.70 and 81,990.26 is: 113,146.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,973 : 206,962.70 = 81,990.26 : x
  2. Step 2: Convert to fraction form
    149,973/206,962.70 = 81,990.26/x
  3. Step 3: Cross multiply
    149,973x = 206,962.70 × 81,990.26
  4. Step 4: Simplify right side
    149,973x = 16,968,924,138.54
  5. Step 5: Solve for x
    x = 16,968,924,138.54/149,973
  6. Step 6: Final answer
    x = 113,146.53

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