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Finding the Fourth Proportional to 126,912.60, 190,200.90 and 67,620.60

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Solution

The fourth proportional to 126,912.60, 190,200.90 and 67,620.60 is: 101,341.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,912.60 : 190,200.90 = 67,620.60 : x
  2. Step 2: Convert to fraction form
    126,912.60/190,200.90 = 67,620.60/x
  3. Step 3: Cross multiply
    126,912.60x = 190,200.90 × 67,620.60
  4. Step 4: Simplify right side
    126,912.60x = 12,861,498,978.54
  5. Step 5: Solve for x
    x = 12,861,498,978.54/126,912.60
  6. Step 6: Final answer
    x = 101,341.39

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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.