Home / 141,965.55-195,912.05-81,540.09

Finding the Fourth Proportional to 141,965.55, 195,912.05 and 81,540.09

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Solution

The fourth proportional to 141,965.55, 195,912.05 and 81,540.09 is: 112,525.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,965.55 : 195,912.05 = 81,540.09 : x
  2. Step 2: Convert to fraction form
    141,965.55/195,912.05 = 81,540.09/x
  3. Step 3: Cross multiply
    141,965.55x = 195,912.05 × 81,540.09
  4. Step 4: Simplify right side
    141,965.55x = 15,974,685,781.38
  5. Step 5: Solve for x
    x = 15,974,685,781.38/141,965.55
  6. Step 6: Final answer
    x = 112,525.09

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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.