Home / 143,836.94-198,486.78-80,172.56

Finding the Fourth Proportional to 143,836.94, 198,486.78 and 80,172.56

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Solution

The fourth proportional to 143,836.94, 198,486.78 and 80,172.56 is: 110,633.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,836.94 : 198,486.78 = 80,172.56 : x
  2. Step 2: Convert to fraction form
    143,836.94/198,486.78 = 80,172.56/x
  3. Step 3: Cross multiply
    143,836.94x = 198,486.78 × 80,172.56
  4. Step 4: Simplify right side
    143,836.94x = 15,913,193,278.76
  5. Step 5: Solve for x
    x = 15,913,193,278.76/143,836.94
  6. Step 6: Final answer
    x = 110,633.56

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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.