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Finding the Fourth Proportional to 123,512.64, 170,448.03 and 66,924

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Solution

The fourth proportional to 123,512.64, 170,448.03 and 66,924 is: 92,355.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,512.64 : 170,448.03 = 66,924 : x
  2. Step 2: Convert to fraction form
    123,512.64/170,448.03 = 66,924/x
  3. Step 3: Cross multiply
    123,512.64x = 170,448.03 × 66,924
  4. Step 4: Simplify right side
    123,512.64x = 11,407,063,959.72
  5. Step 5: Solve for x
    x = 11,407,063,959.72/123,512.64
  6. Step 6: Final answer
    x = 92,355.44

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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.