Home / 120,765.96-166,661.82-69,777

Finding the Fourth Proportional to 120,765.96, 166,661.82 and 69,777

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Solution

The fourth proportional to 120,765.96, 166,661.82 and 69,777 is: 96,295.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,765.96 : 166,661.82 = 69,777 : x
  2. Step 2: Convert to fraction form
    120,765.96/166,661.82 = 69,777/x
  3. Step 3: Cross multiply
    120,765.96x = 166,661.82 × 69,777
  4. Step 4: Simplify right side
    120,765.96x = 11,629,161,814.14
  5. Step 5: Solve for x
    x = 11,629,161,814.14/120,765.96
  6. Step 6: Final answer
    x = 96,295.03

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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.