Home / 143,579.27-198,131.63-79,035.94

Finding the Fourth Proportional to 143,579.27, 198,131.63 and 79,035.94

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Solution

The fourth proportional to 143,579.27, 198,131.63 and 79,035.94 is: 109,065.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,579.27 : 198,131.63 = 79,035.94 : x
  2. Step 2: Convert to fraction form
    143,579.27/198,131.63 = 79,035.94/x
  3. Step 3: Cross multiply
    143,579.27x = 198,131.63 × 79,035.94
  4. Step 4: Simplify right side
    143,579.27x = 15,659,519,620.78
  5. Step 5: Solve for x
    x = 15,659,519,620.78/143,579.27
  6. Step 6: Final answer
    x = 109,065.32

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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.