Home / 128,238.37-192,339.57-43,997.15

Finding the Fourth Proportional to 128,238.37, 192,339.57 and 43,997.15

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Solution

The fourth proportional to 128,238.37, 192,339.57 and 43,997.15 is: 65,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,238.37 : 192,339.57 = 43,997.15 : x
  2. Step 2: Convert to fraction form
    128,238.37/192,339.57 = 43,997.15/x
  3. Step 3: Cross multiply
    128,238.37x = 192,339.57 × 43,997.15
  4. Step 4: Simplify right side
    128,238.37x = 8,462,392,912.23
  5. Step 5: Solve for x
    x = 8,462,392,912.23/128,238.37
  6. Step 6: Final answer
    x = 65,989.55

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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.