Home / 128,085.95-191,997.68-53,249.55

Finding the Fourth Proportional to 128,085.95, 191,997.68 and 53,249.55

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Solution

The fourth proportional to 128,085.95, 191,997.68 and 53,249.55 is: 79,819.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,085.95 : 191,997.68 = 53,249.55 : x
  2. Step 2: Convert to fraction form
    128,085.95/191,997.68 = 53,249.55/x
  3. Step 3: Cross multiply
    128,085.95x = 191,997.68 × 53,249.55
  4. Step 4: Simplify right side
    128,085.95x = 10,223,789,794.80
  5. Step 5: Solve for x
    x = 10,223,789,794.80/128,085.95
  6. Step 6: Final answer
    x = 79,819.76

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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.