Home / 185,611.35-256,143.85-100,728.42

Finding the Fourth Proportional to 185,611.35, 256,143.85 and 100,728.42

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Solution

The fourth proportional to 185,611.35, 256,143.85 and 100,728.42 is: 139,005.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,611.35 : 256,143.85 = 100,728.42 : x
  2. Step 2: Convert to fraction form
    185,611.35/256,143.85 = 100,728.42/x
  3. Step 3: Cross multiply
    185,611.35x = 256,143.85 × 100,728.42
  4. Step 4: Simplify right side
    185,611.35x = 25,800,965,303.22
  5. Step 5: Solve for x
    x = 25,800,965,303.22/185,611.35
  6. Step 6: Final answer
    x = 139,005.32

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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.