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Finding the Fourth Proportional to 104,348.60, 143,912.27 and 80,208.07

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Solution

The fourth proportional to 104,348.60, 143,912.27 and 80,208.07 is: 110,618.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,348.60 : 143,912.27 = 80,208.07 : x
  2. Step 2: Convert to fraction form
    104,348.60/143,912.27 = 80,208.07/x
  3. Step 3: Cross multiply
    104,348.60x = 143,912.27 × 80,208.07
  4. Step 4: Simplify right side
    104,348.60x = 11,542,925,850.68
  5. Step 5: Solve for x
    x = 11,542,925,850.68/104,348.60
  6. Step 6: Final answer
    x = 110,618.88

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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.