Home / 185,665.13-256,217.27-100,781.58

Finding the Fourth Proportional to 185,665.13, 256,217.27 and 100,781.58

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Solution

The fourth proportional to 185,665.13, 256,217.27 and 100,781.58 is: 139,078.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,665.13 : 256,217.27 = 100,781.58 : x
  2. Step 2: Convert to fraction form
    185,665.13/256,217.27 = 100,781.58/x
  3. Step 3: Cross multiply
    185,665.13x = 256,217.27 × 100,781.58
  4. Step 4: Simplify right side
    185,665.13x = 25,821,980,789.98
  5. Step 5: Solve for x
    x = 25,821,980,789.98/185,665.13
  6. Step 6: Final answer
    x = 139,078.25

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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.