Home / 236,105.09-325,815.51-128,672.78

Finding the Fourth Proportional to 236,105.09, 325,815.51 and 128,672.78

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Solution

The fourth proportional to 236,105.09, 325,815.51 and 128,672.78 is: 177,563.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,105.09 : 325,815.51 = 128,672.78 : x
  2. Step 2: Convert to fraction form
    236,105.09/325,815.51 = 128,672.78/x
  3. Step 3: Cross multiply
    236,105.09x = 325,815.51 × 128,672.78
  4. Step 4: Simplify right side
    236,105.09x = 41,923,587,438.82
  5. Step 5: Solve for x
    x = 41,923,587,438.82/236,105.09
  6. Step 6: Final answer
    x = 177,563.25

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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.