Home / 128,579.33-192,899.55-53,657.84

Finding the Fourth Proportional to 128,579.33, 192,899.55 and 53,657.84

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Solution

The fourth proportional to 128,579.33, 192,899.55 and 53,657.84 is: 80,499.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,579.33 : 192,899.55 = 53,657.84 : x
  2. Step 2: Convert to fraction form
    128,579.33/192,899.55 = 53,657.84/x
  3. Step 3: Cross multiply
    128,579.33x = 192,899.55 × 53,657.84
  4. Step 4: Simplify right side
    128,579.33x = 10,350,573,189.97
  5. Step 5: Solve for x
    x = 10,350,573,189.97/128,579.33
  6. Step 6: Final answer
    x = 80,499.51

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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.