Home / 236,215.40-325,974.11-128,785.23

Finding the Fourth Proportional to 236,215.40, 325,974.11 and 128,785.23

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Solution

The fourth proportional to 236,215.40, 325,974.11 and 128,785.23 is: 177,721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,215.40 : 325,974.11 = 128,785.23 : x
  2. Step 2: Convert to fraction form
    236,215.40/325,974.11 = 128,785.23/x
  3. Step 3: Cross multiply
    236,215.40x = 325,974.11 × 128,785.23
  4. Step 4: Simplify right side
    236,215.40x = 41,980,650,086.47
  5. Step 5: Solve for x
    x = 41,980,650,086.47/236,215.40
  6. Step 6: Final answer
    x = 177,721.91

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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.