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Finding the Fourth Proportional to 236,161.87, 325,896.88 and 128,734

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Solution

The fourth proportional to 236,161.87, 325,896.88 and 128,734 is: 177,649.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,161.87 : 325,896.88 = 128,734 : x
  2. Step 2: Convert to fraction form
    236,161.87/325,896.88 = 128,734/x
  3. Step 3: Cross multiply
    236,161.87x = 325,896.88 × 128,734
  4. Step 4: Simplify right side
    236,161.87x = 41,954,008,949.92
  5. Step 5: Solve for x
    x = 41,954,008,949.92/236,161.87
  6. Step 6: Final answer
    x = 177,649.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.