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Finding the Fourth Proportional to 123,077.45, 169,855.84 and 68,633.30

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Solution

The fourth proportional to 123,077.45, 169,855.84 and 68,633.30 is: 94,718.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,077.45 : 169,855.84 = 68,633.30 : x
  2. Step 2: Convert to fraction form
    123,077.45/169,855.84 = 68,633.30/x
  3. Step 3: Cross multiply
    123,077.45x = 169,855.84 × 68,633.30
  4. Step 4: Simplify right side
    123,077.45x = 11,657,766,227.25
  5. Step 5: Solve for x
    x = 11,657,766,227.25/123,077.45
  6. Step 6: Final answer
    x = 94,718.95

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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.