Home / 142,578.03-196,806.84-82,172.79

Finding the Fourth Proportional to 142,578.03, 196,806.84 and 82,172.79

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Solution

The fourth proportional to 142,578.03, 196,806.84 and 82,172.79 is: 113,426.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,578.03 : 196,806.84 = 82,172.79 : x
  2. Step 2: Convert to fraction form
    142,578.03/196,806.84 = 82,172.79/x
  3. Step 3: Cross multiply
    142,578.03x = 196,806.84 × 82,172.79
  4. Step 4: Simplify right side
    142,578.03x = 16,172,167,133.88
  5. Step 5: Solve for x
    x = 16,172,167,133.88/142,578.03
  6. Step 6: Final answer
    x = 113,426.78

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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.