Home / 126,639.45-174,724.83-72,923.09

Finding the Fourth Proportional to 126,639.45, 174,724.83 and 72,923.09

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Solution

The fourth proportional to 126,639.45, 174,724.83 and 72,923.09 is: 100,612.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,639.45 : 174,724.83 = 72,923.09 : x
  2. Step 2: Convert to fraction form
    126,639.45/174,724.83 = 72,923.09/x
  3. Step 3: Cross multiply
    126,639.45x = 174,724.83 × 72,923.09
  4. Step 4: Simplify right side
    126,639.45x = 12,741,473,629.70
  5. Step 5: Solve for x
    x = 12,741,473,629.70/126,639.45
  6. Step 6: Final answer
    x = 100,612.20

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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.