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Finding the Fourth Proportional to 123,735.69, 170,755.97 and 67,147.47

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Solution

The fourth proportional to 123,735.69, 170,755.97 and 67,147.47 is: 92,663.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,735.69 : 170,755.97 = 67,147.47 : x
  2. Step 2: Convert to fraction form
    123,735.69/170,755.97 = 67,147.47/x
  3. Step 3: Cross multiply
    123,735.69x = 170,755.97 × 67,147.47
  4. Step 4: Simplify right side
    123,735.69x = 11,465,831,037.16
  5. Step 5: Solve for x
    x = 11,465,831,037.16/123,735.69
  6. Step 6: Final answer
    x = 92,663.90

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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.