Home / 123,396.18-170,286.78-66,807.54

Finding the Fourth Proportional to 123,396.18, 170,286.78 and 66,807.54

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Solution

The fourth proportional to 123,396.18, 170,286.78 and 66,807.54 is: 92,194.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,396.18 : 170,286.78 = 66,807.54 : x
  2. Step 2: Convert to fraction form
    123,396.18/170,286.78 = 66,807.54/x
  3. Step 3: Cross multiply
    123,396.18x = 170,286.78 × 66,807.54
  4. Step 4: Simplify right side
    123,396.18x = 11,376,440,866.32
  5. Step 5: Solve for x
    x = 11,376,440,866.32/123,396.18
  6. Step 6: Final answer
    x = 92,194.43

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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.