Home / 236,213.89-325,974.94-128,783.90

Finding the Fourth Proportional to 236,213.89, 325,974.94 and 128,783.90

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Solution

The fourth proportional to 236,213.89, 325,974.94 and 128,783.90 is: 177,721.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,213.89 : 325,974.94 = 128,783.90 : x
  2. Step 2: Convert to fraction form
    236,213.89/325,974.94 = 128,783.90/x
  3. Step 3: Cross multiply
    236,213.89x = 325,974.94 × 128,783.90
  4. Step 4: Simplify right side
    236,213.89x = 41,980,322,445.59
  5. Step 5: Solve for x
    x = 41,980,322,445.59/236,213.89
  6. Step 6: Final answer
    x = 177,721.65

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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.