Home / 100,951.25-139,183.33-82,734.91

Finding the Fourth Proportional to 100,951.25, 139,183.33 and 82,734.91

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Solution

The fourth proportional to 100,951.25, 139,183.33 and 82,734.91 is: 114,068.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,951.25 : 139,183.33 = 82,734.91 : x
  2. Step 2: Convert to fraction form
    100,951.25/139,183.33 = 82,734.91/x
  3. Step 3: Cross multiply
    100,951.25x = 139,183.33 × 82,734.91
  4. Step 4: Simplify right side
    100,951.25x = 11,515,320,281.05
  5. Step 5: Solve for x
    x = 11,515,320,281.05/100,951.25
  6. Step 6: Final answer
    x = 114,068.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.