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Finding the Fourth Proportional to 123,124.26, 169,911.48 and 66,535.64

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Solution

The fourth proportional to 123,124.26, 169,911.48 and 66,535.64 is: 91,819.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,124.26 : 169,911.48 = 66,535.64 : x
  2. Step 2: Convert to fraction form
    123,124.26/169,911.48 = 66,535.64/x
  3. Step 3: Cross multiply
    123,124.26x = 169,911.48 × 66,535.64
  4. Step 4: Simplify right side
    123,124.26x = 11,305,169,065.15
  5. Step 5: Solve for x
    x = 11,305,169,065.15/123,124.26
  6. Step 6: Final answer
    x = 91,819.18

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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.