Home / 185,611.11-256,143.32-100,728.18

Finding the Fourth Proportional to 185,611.11, 256,143.32 and 100,728.18

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Solution

The fourth proportional to 185,611.11, 256,143.32 and 100,728.18 is: 139,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,611.11 : 256,143.32 = 100,728.18 : x
  2. Step 2: Convert to fraction form
    185,611.11/256,143.32 = 100,728.18/x
  3. Step 3: Cross multiply
    185,611.11x = 256,143.32 × 100,728.18
  4. Step 4: Simplify right side
    185,611.11x = 25,800,849,939.12
  5. Step 5: Solve for x
    x = 25,800,849,939.12/185,611.11
  6. Step 6: Final answer
    x = 139,004.88

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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.