Home / 126,216.78-189,319.68-31,447.38

Finding the Fourth Proportional to 126,216.78, 189,319.68 and 31,447.38

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Solution

The fourth proportional to 126,216.78, 189,319.68 and 31,447.38 is: 47,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,216.78 : 189,319.68 = 31,447.38 : x
  2. Step 2: Convert to fraction form
    126,216.78/189,319.68 = 31,447.38/x
  3. Step 3: Cross multiply
    126,216.78x = 189,319.68 × 31,447.38
  4. Step 4: Simplify right side
    126,216.78x = 5,953,607,918.44
  5. Step 5: Solve for x
    x = 5,953,607,918.44/126,216.78
  6. Step 6: Final answer
    x = 47,169.70

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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.