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Finding the Fourth Proportional to 205,835.60, 308,592.12 and 81,269.84

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Solution

The fourth proportional to 205,835.60, 308,592.12 and 81,269.84 is: 121,841.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,835.60 : 308,592.12 = 81,269.84 : x
  2. Step 2: Convert to fraction form
    205,835.60/308,592.12 = 81,269.84/x
  3. Step 3: Cross multiply
    205,835.60x = 308,592.12 × 81,269.84
  4. Step 4: Simplify right side
    205,835.60x = 25,079,232,217.66
  5. Step 5: Solve for x
    x = 25,079,232,217.66/205,835.60
  6. Step 6: Final answer
    x = 121,841.08

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