Home / 126,858-189,985.68-82,346.88

Finding the Fourth Proportional to 126,858, 189,985.68 and 82,346.88

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Solution

The fourth proportional to 126,858, 189,985.68 and 82,346.88 is: 123,324.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,858 : 189,985.68 = 82,346.88 : x
  2. Step 2: Convert to fraction form
    126,858/189,985.68 = 82,346.88/x
  3. Step 3: Cross multiply
    126,858x = 189,985.68 × 82,346.88
  4. Step 4: Simplify right side
    126,858x = 15,644,727,992.68
  5. Step 5: Solve for x
    x = 15,644,727,992.68/126,858
  6. Step 6: Final answer
    x = 123,324.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.