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Finding the Fourth Proportional to 104,272.90, 143,952.44 and 81,563.64

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Solution

The fourth proportional to 104,272.90, 143,952.44 and 81,563.64 is: 112,601.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,272.90 : 143,952.44 = 81,563.64 : x
  2. Step 2: Convert to fraction form
    104,272.90/143,952.44 = 81,563.64/x
  3. Step 3: Cross multiply
    104,272.90x = 143,952.44 × 81,563.64
  4. Step 4: Simplify right side
    104,272.90x = 11,741,284,789.37
  5. Step 5: Solve for x
    x = 11,741,284,789.37/104,272.90
  6. Step 6: Final answer
    x = 112,601.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.