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Finding the Fourth Proportional to 123,069.26, 169,835.64 and 66,480.64

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Solution

The fourth proportional to 123,069.26, 169,835.64 and 66,480.64 is: 91,743.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,069.26 : 169,835.64 = 66,480.64 : x
  2. Step 2: Convert to fraction form
    123,069.26/169,835.64 = 66,480.64/x
  3. Step 3: Cross multiply
    123,069.26x = 169,835.64 × 66,480.64
  4. Step 4: Simplify right side
    123,069.26x = 11,290,782,042.01
  5. Step 5: Solve for x
    x = 11,290,782,042.01/123,069.26
  6. Step 6: Final answer
    x = 91,743.32

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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.