Home / 126,108.39-189,218.61-66,122.49

Finding the Fourth Proportional to 126,108.39, 189,218.61 and 66,122.49

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Solution

The fourth proportional to 126,108.39, 189,218.61 and 66,122.49 is: 99,213.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,108.39 : 189,218.61 = 66,122.49 : x
  2. Step 2: Convert to fraction form
    126,108.39/189,218.61 = 66,122.49/x
  3. Step 3: Cross multiply
    126,108.39x = 189,218.61 × 66,122.49
  4. Step 4: Simplify right side
    126,108.39x = 12,511,605,647.54
  5. Step 5: Solve for x
    x = 12,511,605,647.54/126,108.39
  6. Step 6: Final answer
    x = 99,213.11

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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.