Home / 123,531.50-185,217.26-81,283.66

Finding the Fourth Proportional to 123,531.50, 185,217.26 and 81,283.66

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Solution

The fourth proportional to 123,531.50, 185,217.26 and 81,283.66 is: 121,872.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,531.50 : 185,217.26 = 81,283.66 : x
  2. Step 2: Convert to fraction form
    123,531.50/185,217.26 = 81,283.66/x
  3. Step 3: Cross multiply
    123,531.50x = 185,217.26 × 81,283.66
  4. Step 4: Simplify right side
    123,531.50x = 15,055,135,918.51
  5. Step 5: Solve for x
    x = 15,055,135,918.51/123,531.50
  6. Step 6: Final answer
    x = 121,872.85

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1.5x scale

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.