Home / 128,056.72-192,183.09-57,985.24

Finding the Fourth Proportional to 128,056.72, 192,183.09 and 57,985.24

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Solution

The fourth proportional to 128,056.72, 192,183.09 and 57,985.24 is: 87,022.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,056.72 : 192,183.09 = 57,985.24 : x
  2. Step 2: Convert to fraction form
    128,056.72/192,183.09 = 57,985.24/x
  3. Step 3: Cross multiply
    128,056.72x = 192,183.09 × 57,985.24
  4. Step 4: Simplify right side
    128,056.72x = 11,143,782,597.59
  5. Step 5: Solve for x
    x = 11,143,782,597.59/128,056.72
  6. Step 6: Final answer
    x = 87,022.24

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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.