Home / 140,723.37-194,194.68-78,634.39

Finding the Fourth Proportional to 140,723.37, 194,194.68 and 78,634.39

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Solution

The fourth proportional to 140,723.37, 194,194.68 and 78,634.39 is: 108,513.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,723.37 : 194,194.68 = 78,634.39 : x
  2. Step 2: Convert to fraction form
    140,723.37/194,194.68 = 78,634.39/x
  3. Step 3: Cross multiply
    140,723.37x = 194,194.68 × 78,634.39
  4. Step 4: Simplify right side
    140,723.37x = 15,270,380,203.05
  5. Step 5: Solve for x
    x = 15,270,380,203.05/140,723.37
  6. Step 6: Final answer
    x = 108,513.46

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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.