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Finding the Fourth Proportional to 185,138.73, 255,491.39 and 100,255.77

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Solution

The fourth proportional to 185,138.73, 255,491.39 and 100,255.77 is: 138,352.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,138.73 : 255,491.39 = 100,255.77 : x
  2. Step 2: Convert to fraction form
    185,138.73/255,491.39 = 100,255.77/x
  3. Step 3: Cross multiply
    185,138.73x = 255,491.39 × 100,255.77
  4. Step 4: Simplify right side
    185,138.73x = 25,614,485,531.54
  5. Step 5: Solve for x
    x = 25,614,485,531.54/185,138.73
  6. Step 6: Final answer
    x = 138,352.93

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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.