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Finding the Fourth Proportional to 126,728.96, 174,924.94 and 73,049.88

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Solution

The fourth proportional to 126,728.96, 174,924.94 and 73,049.88 is: 100,831.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,728.96 : 174,924.94 = 73,049.88 : x
  2. Step 2: Convert to fraction form
    126,728.96/174,924.94 = 73,049.88/x
  3. Step 3: Cross multiply
    126,728.96x = 174,924.94 × 73,049.88
  4. Step 4: Simplify right side
    126,728.96x = 12,778,245,876.01
  5. Step 5: Solve for x
    x = 12,778,245,876.01/126,728.96
  6. Step 6: Final answer
    x = 100,831.30

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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.