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Finding the Fourth Proportional to 126,571.20, 189,856.80 and 73,953.60

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Solution

The fourth proportional to 126,571.20, 189,856.80 and 73,953.60 is: 110,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,571.20 : 189,856.80 = 73,953.60 : x
  2. Step 2: Convert to fraction form
    126,571.20/189,856.80 = 73,953.60/x
  3. Step 3: Cross multiply
    126,571.20x = 189,856.80 × 73,953.60
  4. Step 4: Simplify right side
    126,571.20x = 14,040,593,844.48
  5. Step 5: Solve for x
    x = 14,040,593,844.48/126,571.20
  6. Step 6: Final answer
    x = 110,930.40

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1.5x scale

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.