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Finding the Fourth Proportional to 123,470.68, 170,389.36 and 66,882.28

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Solution

The fourth proportional to 123,470.68, 170,389.36 and 66,882.28 is: 92,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,470.68 : 170,389.36 = 66,882.28 : x
  2. Step 2: Convert to fraction form
    123,470.68/170,389.36 = 66,882.28/x
  3. Step 3: Cross multiply
    123,470.68x = 170,389.36 × 66,882.28
  4. Step 4: Simplify right side
    123,470.68x = 11,396,028,884.54
  5. Step 5: Solve for x
    x = 11,396,028,884.54/123,470.68
  6. Step 6: Final answer
    x = 92,297.45

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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.