Home / 126,616.88-189,855.19-51,789.57

Finding the Fourth Proportional to 126,616.88, 189,855.19 and 51,789.57

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Solution

The fourth proportional to 126,616.88, 189,855.19 and 51,789.57 is: 77,655.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,616.88 : 189,855.19 = 51,789.57 : x
  2. Step 2: Convert to fraction form
    126,616.88/189,855.19 = 51,789.57/x
  3. Step 3: Cross multiply
    126,616.88x = 189,855.19 × 51,789.57
  4. Step 4: Simplify right side
    126,616.88x = 9,832,518,393.42
  5. Step 5: Solve for x
    x = 9,832,518,393.42/126,616.88
  6. Step 6: Final answer
    x = 77,655.67

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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.