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Finding the Fourth Proportional to 243,891.20, 365,836.80 and 86,124.80

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Solution

The fourth proportional to 243,891.20, 365,836.80 and 86,124.80 is: 129,187.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,891.20 : 365,836.80 = 86,124.80 : x
  2. Step 2: Convert to fraction form
    243,891.20/365,836.80 = 86,124.80/x
  3. Step 3: Cross multiply
    243,891.20x = 365,836.80 × 86,124.80
  4. Step 4: Simplify right side
    243,891.20x = 31,507,621,232.64
  5. Step 5: Solve for x
    x = 31,507,621,232.64/243,891.20
  6. Step 6: Final answer
    x = 129,187.20

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