Home / 143,729.82-198,347.26-80,067.76

Finding the Fourth Proportional to 143,729.82, 198,347.26 and 80,067.76

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Solution

The fourth proportional to 143,729.82, 198,347.26 and 80,067.76 is: 110,493.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,729.82 : 198,347.26 = 80,067.76 : x
  2. Step 2: Convert to fraction form
    143,729.82/198,347.26 = 80,067.76/x
  3. Step 3: Cross multiply
    143,729.82x = 198,347.26 × 80,067.76
  4. Step 4: Simplify right side
    143,729.82x = 15,881,220,810.34
  5. Step 5: Solve for x
    x = 15,881,220,810.34/143,729.82
  6. Step 6: Final answer
    x = 110,493.57

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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.