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Finding the Fourth Proportional to 123,735.78, 170,754.21 and 67,145.94

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Solution

The fourth proportional to 123,735.78, 170,754.21 and 67,145.94 is: 92,660.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,735.78 : 170,754.21 = 67,145.94 : x
  2. Step 2: Convert to fraction form
    123,735.78/170,754.21 = 67,145.94/x
  3. Step 3: Cross multiply
    123,735.78x = 170,754.21 × 67,145.94
  4. Step 4: Simplify right side
    123,735.78x = 11,465,451,939.41
  5. Step 5: Solve for x
    x = 11,465,451,939.41/123,735.78
  6. Step 6: Final answer
    x = 92,660.76

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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.