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Finding the Fourth Proportional to 123,755.31, 170,782.92 and 67,166.73

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Solution

The fourth proportional to 123,755.31, 170,782.92 and 67,166.73 is: 92,690.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,755.31 : 170,782.92 = 67,166.73 : x
  2. Step 2: Convert to fraction form
    123,755.31/170,782.92 = 67,166.73/x
  3. Step 3: Cross multiply
    123,755.31x = 170,782.92 × 67,166.73
  4. Step 4: Simplify right side
    123,755.31x = 11,470,930,276.25
  5. Step 5: Solve for x
    x = 11,470,930,276.25/123,755.31
  6. Step 6: Final answer
    x = 92,690.41

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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.