Home / 87,183.42-120,357.54-61,709.73

Finding the Fourth Proportional to 87,183.42, 120,357.54 and 61,709.73

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Solution

The fourth proportional to 87,183.42, 120,357.54 and 61,709.73 is: 85,190.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,183.42 : 120,357.54 = 61,709.73 : x
  2. Step 2: Convert to fraction form
    87,183.42/120,357.54 = 61,709.73/x
  3. Step 3: Cross multiply
    87,183.42x = 120,357.54 × 61,709.73
  4. Step 4: Simplify right side
    87,183.42x = 7,427,231,296.86
  5. Step 5: Solve for x
    x = 7,427,231,296.86/87,183.42
  6. Step 6: Final answer
    x = 85,190.87

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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.