Home / 128,579.25-192,899.66-53,657.71

Finding the Fourth Proportional to 128,579.25, 192,899.66 and 53,657.71

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Solution

The fourth proportional to 128,579.25, 192,899.66 and 53,657.71 is: 80,499.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,579.25 : 192,899.66 = 53,657.71 : x
  2. Step 2: Convert to fraction form
    128,579.25/192,899.66 = 53,657.71/x
  3. Step 3: Cross multiply
    128,579.25x = 192,899.66 × 53,657.71
  4. Step 4: Simplify right side
    128,579.25x = 10,350,554,015.38
  5. Step 5: Solve for x
    x = 10,350,554,015.38/128,579.25
  6. Step 6: Final answer
    x = 80,499.41

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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.