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Finding the Fourth Proportional to 128,550.83, 192,754.12 and 88,070.09

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Solution

The fourth proportional to 128,550.83, 192,754.12 and 88,070.09 is: 132,055.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,550.83 : 192,754.12 = 88,070.09 : x
  2. Step 2: Convert to fraction form
    128,550.83/192,754.12 = 88,070.09/x
  3. Step 3: Cross multiply
    128,550.83x = 192,754.12 × 88,070.09
  4. Step 4: Simplify right side
    128,550.83x = 16,975,871,512.33
  5. Step 5: Solve for x
    x = 16,975,871,512.33/128,550.83
  6. Step 6: Final answer
    x = 132,055.71

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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.