Home / 142,942.97-197,256.26-79,286.69

Finding the Fourth Proportional to 142,942.97, 197,256.26 and 79,286.69

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Solution

The fourth proportional to 142,942.97, 197,256.26 and 79,286.69 is: 109,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,942.97 : 197,256.26 = 79,286.69 : x
  2. Step 2: Convert to fraction form
    142,942.97/197,256.26 = 79,286.69/x
  3. Step 3: Cross multiply
    142,942.97x = 197,256.26 × 79,286.69
  4. Step 4: Simplify right side
    142,942.97x = 15,639,796,628.54
  5. Step 5: Solve for x
    x = 15,639,796,628.54/142,942.97
  6. Step 6: Final answer
    x = 109,412.84

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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.