Home / 126,851.62-190,226.40-82,411.78

Finding the Fourth Proportional to 126,851.62, 190,226.40 and 82,411.78

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Solution

The fourth proportional to 126,851.62, 190,226.40 and 82,411.78 is: 123,584.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,851.62 : 190,226.40 = 82,411.78 : x
  2. Step 2: Convert to fraction form
    126,851.62/190,226.40 = 82,411.78/x
  3. Step 3: Cross multiply
    126,851.62x = 190,226.40 × 82,411.78
  4. Step 4: Simplify right side
    126,851.62x = 15,676,896,226.99
  5. Step 5: Solve for x
    x = 15,676,896,226.99/126,851.62
  6. Step 6: Final answer
    x = 123,584.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.