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Finding the Fourth Proportional to 145,472.76, 200,736.09 and 81,809.19

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Solution

The fourth proportional to 145,472.76, 200,736.09 and 81,809.19 is: 112,887.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,472.76 : 200,736.09 = 81,809.19 : x
  2. Step 2: Convert to fraction form
    145,472.76/200,736.09 = 81,809.19/x
  3. Step 3: Cross multiply
    145,472.76x = 200,736.09 × 81,809.19
  4. Step 4: Simplify right side
    145,472.76x = 16,422,056,926.67
  5. Step 5: Solve for x
    x = 16,422,056,926.67/145,472.76
  6. Step 6: Final answer
    x = 112,887.51

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