Home / 100,453.26-138,644.61-66,462.42

Finding the Fourth Proportional to 100,453.26, 138,644.61 and 66,462.42

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Solution

The fourth proportional to 100,453.26, 138,644.61 and 66,462.42 is: 91,730.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,453.26 : 138,644.61 = 66,462.42 : x
  2. Step 2: Convert to fraction form
    100,453.26/138,644.61 = 66,462.42/x
  3. Step 3: Cross multiply
    100,453.26x = 138,644.61 × 66,462.42
  4. Step 4: Simplify right side
    100,453.26x = 9,214,656,300.56
  5. Step 5: Solve for x
    x = 9,214,656,300.56/100,453.26
  6. Step 6: Final answer
    x = 91,730.78

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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.