Home / 143,168.05-197,581.05-79,505.85

Finding the Fourth Proportional to 143,168.05, 197,581.05 and 79,505.85

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Solution

The fourth proportional to 143,168.05, 197,581.05 and 79,505.85 is: 109,723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,168.05 : 197,581.05 = 79,505.85 : x
  2. Step 2: Convert to fraction form
    143,168.05/197,581.05 = 79,505.85/x
  3. Step 3: Cross multiply
    143,168.05x = 197,581.05 × 79,505.85
  4. Step 4: Simplify right side
    143,168.05x = 15,708,849,324.14
  5. Step 5: Solve for x
    x = 15,708,849,324.14/143,168.05
  6. Step 6: Final answer
    x = 109,723.15

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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.