Home / 143,183.05-197,593.07-79,520.85

Finding the Fourth Proportional to 143,183.05, 197,593.07 and 79,520.85

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Solution

The fourth proportional to 143,183.05, 197,593.07 and 79,520.85 is: 109,739.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,183.05 : 197,593.07 = 79,520.85 : x
  2. Step 2: Convert to fraction form
    143,183.05/197,593.07 = 79,520.85/x
  3. Step 3: Cross multiply
    143,183.05x = 197,593.07 × 79,520.85
  4. Step 4: Simplify right side
    143,183.05x = 15,712,768,880.51
  5. Step 5: Solve for x
    x = 15,712,768,880.51/143,183.05
  6. Step 6: Final answer
    x = 109,739.03

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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.