Home / 235,943.05-325,601.91-128,512.75

Finding the Fourth Proportional to 235,943.05, 325,601.91 and 128,512.75

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Solution

The fourth proportional to 235,943.05, 325,601.91 and 128,512.75 is: 177,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,943.05 : 325,601.91 = 128,512.75 : x
  2. Step 2: Convert to fraction form
    235,943.05/325,601.91 = 128,512.75/x
  3. Step 3: Cross multiply
    235,943.05x = 325,601.91 × 128,512.75
  4. Step 4: Simplify right side
    235,943.05x = 41,843,996,859.35
  5. Step 5: Solve for x
    x = 41,843,996,859.35/235,943.05
  6. Step 6: Final answer
    x = 177,347.87

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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.