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Finding the Fourth Proportional to 221,502.09, 305,672.89 and 120,900.09

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Solution

The fourth proportional to 221,502.09, 305,672.89 and 120,900.09 is: 166,842.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,502.09 : 305,672.89 = 120,900.09 : x
  2. Step 2: Convert to fraction form
    221,502.09/305,672.89 = 120,900.09/x
  3. Step 3: Cross multiply
    221,502.09x = 305,672.89 × 120,900.09
  4. Step 4: Simplify right side
    221,502.09x = 36,955,880,982.27
  5. Step 5: Solve for x
    x = 36,955,880,982.27/221,502.09
  6. Step 6: Final answer
    x = 166,842.13

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