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Finding the Fourth Proportional to 128,753, 193,120.86 and 35,259.56

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Solution

The fourth proportional to 128,753, 193,120.86 and 35,259.56 is: 52,886.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,753 : 193,120.86 = 35,259.56 : x
  2. Step 2: Convert to fraction form
    128,753/193,120.86 = 35,259.56/x
  3. Step 3: Cross multiply
    128,753x = 193,120.86 × 35,259.56
  4. Step 4: Simplify right side
    128,753x = 6,809,356,550.42
  5. Step 5: Solve for x
    x = 6,809,356,550.42/128,753
  6. Step 6: Final answer
    x = 52,886.97

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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.