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Finding the Fourth Proportional to 162,206.73, 223,845.78 and 90,589.47

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Solution

The fourth proportional to 162,206.73, 223,845.78 and 90,589.47 is: 125,013.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,206.73 : 223,845.78 = 90,589.47 : x
  2. Step 2: Convert to fraction form
    162,206.73/223,845.78 = 90,589.47/x
  3. Step 3: Cross multiply
    162,206.73x = 223,845.78 × 90,589.47
  4. Step 4: Simplify right side
    162,206.73x = 20,278,070,571.94
  5. Step 5: Solve for x
    x = 20,278,070,571.94/162,206.73
  6. Step 6: Final answer
    x = 125,013.74

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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.