Home / 185,595.09-256,121.42-100,712.15

Finding the Fourth Proportional to 185,595.09, 256,121.42 and 100,712.15

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Solution

The fourth proportional to 185,595.09, 256,121.42 and 100,712.15 is: 138,982.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,595.09 : 256,121.42 = 100,712.15 : x
  2. Step 2: Convert to fraction form
    185,595.09/256,121.42 = 100,712.15/x
  3. Step 3: Cross multiply
    185,595.09x = 256,121.42 × 100,712.15
  4. Step 4: Simplify right side
    185,595.09x = 25,794,538,869.25
  5. Step 5: Solve for x
    x = 25,794,538,869.25/185,595.09
  6. Step 6: Final answer
    x = 138,982.87

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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.