Home / 185,612.92-256,145.70-100,729.78

Finding the Fourth Proportional to 185,612.92, 256,145.70 and 100,729.78

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Solution

The fourth proportional to 185,612.92, 256,145.70 and 100,729.78 is: 139,007.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,612.92 : 256,145.70 = 100,729.78 : x
  2. Step 2: Convert to fraction form
    185,612.92/256,145.70 = 100,729.78/x
  3. Step 3: Cross multiply
    185,612.92x = 256,145.70 × 100,729.78
  4. Step 4: Simplify right side
    185,612.92x = 25,801,500,008.95
  5. Step 5: Solve for x
    x = 25,801,500,008.95/185,612.92
  6. Step 6: Final answer
    x = 139,007.03

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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.