Home / 123,197.92-170,013.11-66,609.29

Finding the Fourth Proportional to 123,197.92, 170,013.11 and 66,609.29

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Solution

The fourth proportional to 123,197.92, 170,013.11 and 66,609.29 is: 91,920.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,197.92 : 170,013.11 = 66,609.29 : x
  2. Step 2: Convert to fraction form
    123,197.92/170,013.11 = 66,609.29/x
  3. Step 3: Cross multiply
    123,197.92x = 170,013.11 × 66,609.29
  4. Step 4: Simplify right side
    123,197.92x = 11,324,452,639.78
  5. Step 5: Solve for x
    x = 11,324,452,639.78/123,197.92
  6. Step 6: Final answer
    x = 91,920.81

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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.