Home / 100,196.46-138,286.26-57,175.74

Finding the Fourth Proportional to 100,196.46, 138,286.26 and 57,175.74

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Solution

The fourth proportional to 100,196.46, 138,286.26 and 57,175.74 is: 78,911.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,196.46 : 138,286.26 = 57,175.74 : x
  2. Step 2: Convert to fraction form
    100,196.46/138,286.26 = 57,175.74/x
  3. Step 3: Cross multiply
    100,196.46x = 138,286.26 × 57,175.74
  4. Step 4: Simplify right side
    100,196.46x = 7,906,619,247.33
  5. Step 5: Solve for x
    x = 7,906,619,247.33/100,196.46
  6. Step 6: Final answer
    x = 78,911.16

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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.