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Finding the Fourth Proportional to 123,883.70, 170,964.20 and 69,436.87

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Solution

The fourth proportional to 123,883.70, 170,964.20 and 69,436.87 is: 95,825.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,883.70 : 170,964.20 = 69,436.87 : x
  2. Step 2: Convert to fraction form
    123,883.70/170,964.20 = 69,436.87/x
  3. Step 3: Cross multiply
    123,883.70x = 170,964.20 × 69,436.87
  4. Step 4: Simplify right side
    123,883.70x = 11,871,218,930.05
  5. Step 5: Solve for x
    x = 11,871,218,930.05/123,883.70
  6. Step 6: Final answer
    x = 95,825.51

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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.