Home / 112,120.97-154,601.24-91,639.46

Finding the Fourth Proportional to 112,120.97, 154,601.24 and 91,639.46

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Solution

The fourth proportional to 112,120.97, 154,601.24 and 91,639.46 is: 126,359.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,120.97 : 154,601.24 = 91,639.46 : x
  2. Step 2: Convert to fraction form
    112,120.97/154,601.24 = 91,639.46/x
  3. Step 3: Cross multiply
    112,120.97x = 154,601.24 × 91,639.46
  4. Step 4: Simplify right side
    112,120.97x = 14,167,572,917.73
  5. Step 5: Solve for x
    x = 14,167,572,917.73/112,120.97
  6. Step 6: Final answer
    x = 126,359.71

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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.