Home / 143,582.88-198,144.38-79,919.31

Finding the Fourth Proportional to 143,582.88, 198,144.38 and 79,919.31

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Solution

The fourth proportional to 143,582.88, 198,144.38 and 79,919.31 is: 110,288.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,582.88 : 198,144.38 = 79,919.31 : x
  2. Step 2: Convert to fraction form
    143,582.88/198,144.38 = 79,919.31/x
  3. Step 3: Cross multiply
    143,582.88x = 198,144.38 × 79,919.31
  4. Step 4: Simplify right side
    143,582.88x = 15,835,562,129.98
  5. Step 5: Solve for x
    x = 15,835,562,129.98/143,582.88
  6. Step 6: Final answer
    x = 110,288.65

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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.