Home / 128,571.32-192,887.55-53,649.83

Finding the Fourth Proportional to 128,571.32, 192,887.55 and 53,649.83

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Solution

The fourth proportional to 128,571.32, 192,887.55 and 53,649.83 is: 80,487.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,571.32 : 192,887.55 = 53,649.83 : x
  2. Step 2: Convert to fraction form
    128,571.32/192,887.55 = 53,649.83/x
  3. Step 3: Cross multiply
    128,571.32x = 192,887.55 × 53,649.83
  4. Step 4: Simplify right side
    128,571.32x = 10,348,383,302.18
  5. Step 5: Solve for x
    x = 10,348,383,302.18/128,571.32
  6. Step 6: Final answer
    x = 80,487.50

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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.