Home / 185,613.92-256,147.08-100,730.78

Finding the Fourth Proportional to 185,613.92, 256,147.08 and 100,730.78

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Solution

The fourth proportional to 185,613.92, 256,147.08 and 100,730.78 is: 139,008.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,613.92 : 256,147.08 = 100,730.78 : x
  2. Step 2: Convert to fraction form
    185,613.92/256,147.08 = 100,730.78/x
  3. Step 3: Cross multiply
    185,613.92x = 256,147.08 × 100,730.78
  4. Step 4: Simplify right side
    185,613.92x = 25,801,895,163.12
  5. Step 5: Solve for x
    x = 25,801,895,163.12/185,613.92
  6. Step 6: Final answer
    x = 139,008.41

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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.