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Finding the Fourth Proportional to 159,638.44, 220,320.96 and 91,676.64

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Solution

The fourth proportional to 159,638.44, 220,320.96 and 91,676.64 is: 126,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,638.44 : 220,320.96 = 91,676.64 : x
  2. Step 2: Convert to fraction form
    159,638.44/220,320.96 = 91,676.64/x
  3. Step 3: Cross multiply
    159,638.44x = 220,320.96 × 91,676.64
  4. Step 4: Simplify right side
    159,638.44x = 20,198,285,334.37
  5. Step 5: Solve for x
    x = 20,198,285,334.37/159,638.44
  6. Step 6: Final answer
    x = 126,525.20

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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.