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Finding the Fourth Proportional to 126,190.60, 189,125.10 and 67,054.60

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Solution

The fourth proportional to 126,190.60, 189,125.10 and 67,054.60 is: 100,496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,190.60 : 189,125.10 = 67,054.60 : x
  2. Step 2: Convert to fraction form
    126,190.60/189,125.10 = 67,054.60/x
  3. Step 3: Cross multiply
    126,190.60x = 189,125.10 × 67,054.60
  4. Step 4: Simplify right side
    126,190.60x = 12,681,707,930.46
  5. Step 5: Solve for x
    x = 12,681,707,930.46/126,190.60
  6. Step 6: Final answer
    x = 100,496.45

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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.