Home / 126,213.48-189,418.14-47,399.40

Finding the Fourth Proportional to 126,213.48, 189,418.14 and 47,399.40

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Solution

The fourth proportional to 126,213.48, 189,418.14 and 47,399.40 is: 71,135.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,213.48 : 189,418.14 = 47,399.40 : x
  2. Step 2: Convert to fraction form
    126,213.48/189,418.14 = 47,399.40/x
  3. Step 3: Cross multiply
    126,213.48x = 189,418.14 × 47,399.40
  4. Step 4: Simplify right side
    126,213.48x = 8,978,306,185.12
  5. Step 5: Solve for x
    x = 8,978,306,185.12/126,213.48
  6. Step 6: Final answer
    x = 71,135.87

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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.