Home / 185,788.16-256,388.96-100,905.21

Finding the Fourth Proportional to 185,788.16, 256,388.96 and 100,905.21

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Solution

The fourth proportional to 185,788.16, 256,388.96 and 100,905.21 is: 139,249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,788.16 : 256,388.96 = 100,905.21 : x
  2. Step 2: Convert to fraction form
    185,788.16/256,388.96 = 100,905.21/x
  3. Step 3: Cross multiply
    185,788.16x = 256,388.96 × 100,905.21
  4. Step 4: Simplify right side
    185,788.16x = 25,870,981,345.96
  5. Step 5: Solve for x
    x = 25,870,981,345.96/185,788.16
  6. Step 6: Final answer
    x = 139,249.90

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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.