Home / 236,171.12-325,906.52-128,738.80

Finding the Fourth Proportional to 236,171.12, 325,906.52 and 128,738.80

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Solution

The fourth proportional to 236,171.12, 325,906.52 and 128,738.80 is: 177,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,171.12 : 325,906.52 = 128,738.80 : x
  2. Step 2: Convert to fraction form
    236,171.12/325,906.52 = 128,738.80/x
  3. Step 3: Cross multiply
    236,171.12x = 325,906.52 × 128,738.80
  4. Step 4: Simplify right side
    236,171.12x = 41,956,814,296.98
  5. Step 5: Solve for x
    x = 41,956,814,296.98/236,171.12
  6. Step 6: Final answer
    x = 177,654.30

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1.5x scale

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.