Home / 126,403.85-189,606.51-42,163.80

Finding the Fourth Proportional to 126,403.85, 189,606.51 and 42,163.80

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Solution

The fourth proportional to 126,403.85, 189,606.51 and 42,163.80 is: 63,245.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,403.85 : 189,606.51 = 42,163.80 : x
  2. Step 2: Convert to fraction form
    126,403.85/189,606.51 = 42,163.80/x
  3. Step 3: Cross multiply
    126,403.85x = 189,606.51 × 42,163.80
  4. Step 4: Simplify right side
    126,403.85x = 7,994,530,255.31
  5. Step 5: Solve for x
    x = 7,994,530,255.31/126,403.85
  6. Step 6: Final answer
    x = 63,245.94

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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.