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Finding the Fourth Proportional to 159,676.40, 220,343.34 and 91,645.48

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Solution

The fourth proportional to 159,676.40, 220,343.34 and 91,645.48 is: 126,464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,676.40 : 220,343.34 = 91,645.48 : x
  2. Step 2: Convert to fraction form
    159,676.40/220,343.34 = 91,645.48/x
  3. Step 3: Cross multiply
    159,676.40x = 220,343.34 × 91,645.48
  4. Step 4: Simplify right side
    159,676.40x = 20,193,470,023.27
  5. Step 5: Solve for x
    x = 20,193,470,023.27/159,676.40
  6. Step 6: Final answer
    x = 126,464.97

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1.5x scale

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.