Home / 236,209.31-325,972.37-128,781.13

Finding the Fourth Proportional to 236,209.31, 325,972.37 and 128,781.13

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Solution

The fourth proportional to 236,209.31, 325,972.37 and 128,781.13 is: 177,719.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,209.31 : 325,972.37 = 128,781.13 : x
  2. Step 2: Convert to fraction form
    236,209.31/325,972.37 = 128,781.13/x
  3. Step 3: Cross multiply
    236,209.31x = 325,972.37 × 128,781.13
  4. Step 4: Simplify right side
    236,209.31x = 41,979,089,513.47
  5. Step 5: Solve for x
    x = 41,979,089,513.47/236,209.31
  6. Step 6: Final answer
    x = 177,719.88

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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.