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Finding the Fourth Proportional to 185,321.28, 255,736.48 and 100,436.48

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Solution

The fourth proportional to 185,321.28, 255,736.48 and 100,436.48 is: 138,598.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,321.28 : 255,736.48 = 100,436.48 : x
  2. Step 2: Convert to fraction form
    185,321.28/255,736.48 = 100,436.48/x
  3. Step 3: Cross multiply
    185,321.28x = 255,736.48 × 100,436.48
  4. Step 4: Simplify right side
    185,321.28x = 25,685,271,858.79
  5. Step 5: Solve for x
    x = 25,685,271,858.79/185,321.28
  6. Step 6: Final answer
    x = 138,598.61

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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.