Home / 126,471.22-189,478.39-79,063.75

Finding the Fourth Proportional to 126,471.22, 189,478.39 and 79,063.75

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Solution

The fourth proportional to 126,471.22, 189,478.39 and 79,063.75 is: 118,452.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,471.22 : 189,478.39 = 79,063.75 : x
  2. Step 2: Convert to fraction form
    126,471.22/189,478.39 = 79,063.75/x
  3. Step 3: Cross multiply
    126,471.22x = 189,478.39 × 79,063.75
  4. Step 4: Simplify right side
    126,471.22x = 14,980,871,178.98
  5. Step 5: Solve for x
    x = 14,980,871,178.98/126,471.22
  6. Step 6: Final answer
    x = 118,452.81

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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.