Home / 126,447.42-174,481.68-78,716.16

Finding the Fourth Proportional to 126,447.42, 174,481.68 and 78,716.16

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Solution

The fourth proportional to 126,447.42, 174,481.68 and 78,716.16 is: 108,618.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,447.42 : 174,481.68 = 78,716.16 : x
  2. Step 2: Convert to fraction form
    126,447.42/174,481.68 = 78,716.16/x
  3. Step 3: Cross multiply
    126,447.42x = 174,481.68 × 78,716.16
  4. Step 4: Simplify right side
    126,447.42x = 13,734,527,839.95
  5. Step 5: Solve for x
    x = 13,734,527,839.95/126,447.42
  6. Step 6: Final answer
    x = 108,618.49

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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.