Home / 141,640.20-195,496.72-81,209.76

Finding the Fourth Proportional to 141,640.20, 195,496.72 and 81,209.76

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Solution

The fourth proportional to 141,640.20, 195,496.72 and 81,209.76 is: 112,088.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,640.20 : 195,496.72 = 81,209.76 : x
  2. Step 2: Convert to fraction form
    141,640.20/195,496.72 = 81,209.76/x
  3. Step 3: Cross multiply
    141,640.20x = 195,496.72 × 81,209.76
  4. Step 4: Simplify right side
    141,640.20x = 15,876,241,711.99
  5. Step 5: Solve for x
    x = 15,876,241,711.99/141,640.20
  6. Step 6: Final answer
    x = 112,088.53

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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.