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Finding the Fourth Proportional to 123,450.28, 170,375.25 and 69,738.77

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Solution

The fourth proportional to 123,450.28, 170,375.25 and 69,738.77 is: 96,247.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,450.28 : 170,375.25 = 69,738.77 : x
  2. Step 2: Convert to fraction form
    123,450.28/170,375.25 = 69,738.77/x
  3. Step 3: Cross multiply
    123,450.28x = 170,375.25 × 69,738.77
  4. Step 4: Simplify right side
    123,450.28x = 11,881,760,668.62
  5. Step 5: Solve for x
    x = 11,881,760,668.62/123,450.28
  6. Step 6: Final answer
    x = 96,247.34

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1.5x scale

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.