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Finding the Fourth Proportional to 123,564.66, 170,519.85 and 66,975.54

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Solution

The fourth proportional to 123,564.66, 170,519.85 and 66,975.54 is: 92,426.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,564.66 : 170,519.85 = 66,975.54 : x
  2. Step 2: Convert to fraction form
    123,564.66/170,519.85 = 66,975.54/x
  3. Step 3: Cross multiply
    123,564.66x = 170,519.85 × 66,975.54
  4. Step 4: Simplify right side
    123,564.66x = 11,420,659,034.47
  5. Step 5: Solve for x
    x = 11,420,659,034.47/123,564.66
  6. Step 6: Final answer
    x = 92,426.58

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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.