Home / 126,850.20-190,137.96-82,508.64

Finding the Fourth Proportional to 126,850.20, 190,137.96 and 82,508.64

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Solution

The fourth proportional to 126,850.20, 190,137.96 and 82,508.64 is: 123,673.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,850.20 : 190,137.96 = 82,508.64 : x
  2. Step 2: Convert to fraction form
    126,850.20/190,137.96 = 82,508.64/x
  3. Step 3: Cross multiply
    126,850.20x = 190,137.96 × 82,508.64
  4. Step 4: Simplify right side
    126,850.20x = 15,688,024,491.97
  5. Step 5: Solve for x
    x = 15,688,024,491.97/126,850.20
  6. Step 6: Final answer
    x = 123,673.63

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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.