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Finding the Fourth Proportional to 123,664.31, 170,652.12 and 67,074.47

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Solution

The fourth proportional to 123,664.31, 170,652.12 and 67,074.47 is: 92,560.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,664.31 : 170,652.12 = 67,074.47 : x
  2. Step 2: Convert to fraction form
    123,664.31/170,652.12 = 67,074.47/x
  3. Step 3: Cross multiply
    123,664.31x = 170,652.12 × 67,074.47
  4. Step 4: Simplify right side
    123,664.31x = 11,446,399,650.12
  5. Step 5: Solve for x
    x = 11,446,399,650.12/123,664.31
  6. Step 6: Final answer
    x = 92,560.26

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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.