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Finding the Fourth Proportional to 123,112.36, 169,895.64 and 69,399.64

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Solution

The fourth proportional to 123,112.36, 169,895.64 and 69,399.64 is: 95,771.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,112.36 : 169,895.64 = 69,399.64 : x
  2. Step 2: Convert to fraction form
    123,112.36/169,895.64 = 69,399.64/x
  3. Step 3: Cross multiply
    123,112.36x = 169,895.64 × 69,399.64
  4. Step 4: Simplify right side
    123,112.36x = 11,790,696,253.57
  5. Step 5: Solve for x
    x = 11,790,696,253.57/123,112.36
  6. Step 6: Final answer
    x = 95,771.83

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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.