Home / 236,143.50-325,878.24-128,711.38

Finding the Fourth Proportional to 236,143.50, 325,878.24 and 128,711.38

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Solution

The fourth proportional to 236,143.50, 325,878.24 and 128,711.38 is: 177,621.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,143.50 : 325,878.24 = 128,711.38 : x
  2. Step 2: Convert to fraction form
    236,143.50/325,878.24 = 128,711.38/x
  3. Step 3: Cross multiply
    236,143.50x = 325,878.24 × 128,711.38
  4. Step 4: Simplify right side
    236,143.50x = 41,944,237,982.37
  5. Step 5: Solve for x
    x = 41,944,237,982.37/236,143.50
  6. Step 6: Final answer
    x = 177,621.82

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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.