Home / 185,612.10-256,145.39-100,729.16

Finding the Fourth Proportional to 185,612.10, 256,145.39 and 100,729.16

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Solution

The fourth proportional to 185,612.10, 256,145.39 and 100,729.16 is: 139,006.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,612.10 : 256,145.39 = 100,729.16 : x
  2. Step 2: Convert to fraction form
    185,612.10/256,145.39 = 100,729.16/x
  3. Step 3: Cross multiply
    185,612.10x = 256,145.39 × 100,729.16
  4. Step 4: Simplify right side
    185,612.10x = 25,801,309,972.57
  5. Step 5: Solve for x
    x = 25,801,309,972.57/185,612.10
  6. Step 6: Final answer
    x = 139,006.62

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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.