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Finding the Fourth Proportional to 123,638.02, 170,620.56 and 67,049.39

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Solution

The fourth proportional to 123,638.02, 170,620.56 and 67,049.39 is: 92,528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,638.02 : 170,620.56 = 67,049.39 : x
  2. Step 2: Convert to fraction form
    123,638.02/170,620.56 = 67,049.39/x
  3. Step 3: Cross multiply
    123,638.02x = 170,620.56 × 67,049.39
  4. Step 4: Simplify right side
    123,638.02x = 11,440,004,896.01
  5. Step 5: Solve for x
    x = 11,440,004,896.01/123,638.02
  6. Step 6: Final answer
    x = 92,528.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.