Home / 185,612.51-256,145.43-100,729.57

Finding the Fourth Proportional to 185,612.51, 256,145.43 and 100,729.57

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Solution

The fourth proportional to 185,612.51, 256,145.43 and 100,729.57 is: 139,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,612.51 : 256,145.43 = 100,729.57 : x
  2. Step 2: Convert to fraction form
    185,612.51/256,145.43 = 100,729.57/x
  3. Step 3: Cross multiply
    185,612.51x = 256,145.43 × 100,729.57
  4. Step 4: Simplify right side
    185,612.51x = 25,801,419,021.37
  5. Step 5: Solve for x
    x = 25,801,419,021.37/185,612.51
  6. Step 6: Final answer
    x = 139,006.90

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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.