Home / 121,930.94-168,322.24-91,727.78

Finding the Fourth Proportional to 121,930.94, 168,322.24 and 91,727.78

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Solution

The fourth proportional to 121,930.94, 168,322.24 and 91,727.78 is: 126,627.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,930.94 : 168,322.24 = 91,727.78 : x
  2. Step 2: Convert to fraction form
    121,930.94/168,322.24 = 91,727.78/x
  3. Step 3: Cross multiply
    121,930.94x = 168,322.24 × 91,727.78
  4. Step 4: Simplify right side
    121,930.94x = 15,439,825,399.83
  5. Step 5: Solve for x
    x = 15,439,825,399.83/121,930.94
  6. Step 6: Final answer
    x = 126,627.63

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1.5x scale

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.