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Finding the Fourth Proportional to 128,237.92, 192,360.78 and 43,996.90

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Solution

The fourth proportional to 128,237.92, 192,360.78 and 43,996.90 is: 65,996.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,237.92 : 192,360.78 = 43,996.90 : x
  2. Step 2: Convert to fraction form
    128,237.92/192,360.78 = 43,996.90/x
  3. Step 3: Cross multiply
    128,237.92x = 192,360.78 × 43,996.90
  4. Step 4: Simplify right side
    128,237.92x = 8,463,277,816.13
  5. Step 5: Solve for x
    x = 8,463,277,816.13/128,237.92
  6. Step 6: Final answer
    x = 65,996.69

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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.