Home / 143,764.88-198,392.90-80,101.31

Finding the Fourth Proportional to 143,764.88, 198,392.90 and 80,101.31

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Solution

The fourth proportional to 143,764.88, 198,392.90 and 80,101.31 is: 110,538.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,764.88 : 198,392.90 = 80,101.31 : x
  2. Step 2: Convert to fraction form
    143,764.88/198,392.90 = 80,101.31/x
  3. Step 3: Cross multiply
    143,764.88x = 198,392.90 × 80,101.31
  4. Step 4: Simplify right side
    143,764.88x = 15,891,529,792.23
  5. Step 5: Solve for x
    x = 15,891,529,792.23/143,764.88
  6. Step 6: Final answer
    x = 110,538.33

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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.