Home / 100,454.26-138,645.99-66,463.42

Finding the Fourth Proportional to 100,454.26, 138,645.99 and 66,463.42

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Solution

The fourth proportional to 100,454.26, 138,645.99 and 66,463.42 is: 91,732.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,454.26 : 138,645.99 = 66,463.42 : x
  2. Step 2: Convert to fraction form
    100,454.26/138,645.99 = 66,463.42/x
  3. Step 3: Cross multiply
    100,454.26x = 138,645.99 × 66,463.42
  4. Step 4: Simplify right side
    100,454.26x = 9,214,886,664.69
  5. Step 5: Solve for x
    x = 9,214,886,664.69/100,454.26
  6. Step 6: Final answer
    x = 91,732.16

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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.