Home / 142,712.46-196,942.86-79,049.97

Finding the Fourth Proportional to 142,712.46, 196,942.86 and 79,049.97

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Solution

The fourth proportional to 142,712.46, 196,942.86 and 79,049.97 is: 109,088.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,712.46 : 196,942.86 = 79,049.97 : x
  2. Step 2: Convert to fraction form
    142,712.46/196,942.86 = 79,049.97/x
  3. Step 3: Cross multiply
    142,712.46x = 196,942.86 × 79,049.97
  4. Step 4: Simplify right side
    142,712.46x = 15,568,327,174.71
  5. Step 5: Solve for x
    x = 15,568,327,174.71/142,712.46
  6. Step 6: Final answer
    x = 109,088.77

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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.