Home / 123,198.10-170,013.62-66,609.48

Finding the Fourth Proportional to 123,198.10, 170,013.62 and 66,609.48

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Solution

The fourth proportional to 123,198.10, 170,013.62 and 66,609.48 is: 91,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,198.10 : 170,013.62 = 66,609.48 : x
  2. Step 2: Convert to fraction form
    123,198.10/170,013.62 = 66,609.48/x
  3. Step 3: Cross multiply
    123,198.10x = 170,013.62 × 66,609.48
  4. Step 4: Simplify right side
    123,198.10x = 11,324,518,562.61
  5. Step 5: Solve for x
    x = 11,324,518,562.61/123,198.10
  6. Step 6: Final answer
    x = 91,921.21

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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.