Home / 126,142.99-189,210.36-51,240.97

Finding the Fourth Proportional to 126,142.99, 189,210.36 and 51,240.97

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Solution

The fourth proportional to 126,142.99, 189,210.36 and 51,240.97 is: 76,859.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,142.99 : 189,210.36 = 51,240.97 : x
  2. Step 2: Convert to fraction form
    126,142.99/189,210.36 = 51,240.97/x
  3. Step 3: Cross multiply
    126,142.99x = 189,210.36 × 51,240.97
  4. Step 4: Simplify right side
    126,142.99x = 9,695,322,809.12
  5. Step 5: Solve for x
    x = 9,695,322,809.12/126,142.99
  6. Step 6: Final answer
    x = 76,859.78

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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.