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Finding the Fourth Proportional to 108,689.20, 163,033.80 and 73,259.80

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Solution

The fourth proportional to 108,689.20, 163,033.80 and 73,259.80 is: 109,889.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,689.20 : 163,033.80 = 73,259.80 : x
  2. Step 2: Convert to fraction form
    108,689.20/163,033.80 = 73,259.80/x
  3. Step 3: Cross multiply
    108,689.20x = 163,033.80 × 73,259.80
  4. Step 4: Simplify right side
    108,689.20x = 11,943,823,581.24
  5. Step 5: Solve for x
    x = 11,943,823,581.24/108,689.20
  6. Step 6: Final answer
    x = 109,889.70

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