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Finding the Fourth Proportional to 123,638.62, 170,603.34 and 69,190.53

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Solution

The fourth proportional to 123,638.62, 170,603.34 and 69,190.53 is: 95,472.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,638.62 : 170,603.34 = 69,190.53 : x
  2. Step 2: Convert to fraction form
    123,638.62/170,603.34 = 69,190.53/x
  3. Step 3: Cross multiply
    123,638.62x = 170,603.34 × 69,190.53
  4. Step 4: Simplify right side
    123,638.62x = 11,804,135,514.37
  5. Step 5: Solve for x
    x = 11,804,135,514.37/123,638.62
  6. Step 6: Final answer
    x = 95,472.88

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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.