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Finding the Fourth Proportional to 100,299.03, 138,414.39 and 54,974.14

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Solution

The fourth proportional to 100,299.03, 138,414.39 and 54,974.14 is: 75,865.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,299.03 : 138,414.39 = 54,974.14 : x
  2. Step 2: Convert to fraction form
    100,299.03/138,414.39 = 54,974.14/x
  3. Step 3: Cross multiply
    100,299.03x = 138,414.39 × 54,974.14
  4. Step 4: Simplify right side
    100,299.03x = 7,609,212,744.11
  5. Step 5: Solve for x
    x = 7,609,212,744.11/100,299.03
  6. Step 6: Final answer
    x = 75,865.26

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1.5x scale

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.