Home / 185,608.05-256,139.10-100,725.11

Finding the Fourth Proportional to 185,608.05, 256,139.10 and 100,725.11

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Solution

The fourth proportional to 185,608.05, 256,139.10 and 100,725.11 is: 139,000.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,608.05 : 256,139.10 = 100,725.11 : x
  2. Step 2: Convert to fraction form
    185,608.05/256,139.10 = 100,725.11/x
  3. Step 3: Cross multiply
    185,608.05x = 256,139.10 × 100,725.11
  4. Step 4: Simplify right side
    185,608.05x = 25,799,639,022.80
  5. Step 5: Solve for x
    x = 25,799,639,022.80/185,608.05
  6. Step 6: Final answer
    x = 139,000.65

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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.