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Finding the Fourth Proportional to 128,003.44, 192,009.27 and 43,760.20

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Solution

The fourth proportional to 128,003.44, 192,009.27 and 43,760.20 is: 65,641.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,003.44 : 192,009.27 = 43,760.20 : x
  2. Step 2: Convert to fraction form
    128,003.44/192,009.27 = 43,760.20/x
  3. Step 3: Cross multiply
    128,003.44x = 192,009.27 × 43,760.20
  4. Step 4: Simplify right side
    128,003.44x = 8,402,364,057.05
  5. Step 5: Solve for x
    x = 8,402,364,057.05/128,003.44
  6. Step 6: Final answer
    x = 65,641.71

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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.