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Finding the Fourth Proportional to 123,976.88, 171,087.27 and 67,388.26

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Solution

The fourth proportional to 123,976.88, 171,087.27 and 67,388.26 is: 92,995.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,976.88 : 171,087.27 = 67,388.26 : x
  2. Step 2: Convert to fraction form
    123,976.88/171,087.27 = 67,388.26/x
  3. Step 3: Cross multiply
    123,976.88x = 171,087.27 × 67,388.26
  4. Step 4: Simplify right side
    123,976.88x = 11,529,273,433.45
  5. Step 5: Solve for x
    x = 11,529,273,433.45/123,976.88
  6. Step 6: Final answer
    x = 92,995.35

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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.