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Finding the Fourth Proportional to 185,263.43, 255,664.62 and 100,380.56

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Solution

The fourth proportional to 185,263.43, 255,664.62 and 100,380.56 is: 138,525.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,263.43 : 255,664.62 = 100,380.56 : x
  2. Step 2: Convert to fraction form
    185,263.43/255,664.62 = 100,380.56/x
  3. Step 3: Cross multiply
    185,263.43x = 255,664.62 × 100,380.56
  4. Step 4: Simplify right side
    185,263.43x = 25,663,756,449.46
  5. Step 5: Solve for x
    x = 25,663,756,449.46/185,263.43
  6. Step 6: Final answer
    x = 138,525.76

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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.