Home / 126,614.21-174,781.41-78,891.14

Finding the Fourth Proportional to 126,614.21, 174,781.41 and 78,891.14

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Solution

The fourth proportional to 126,614.21, 174,781.41 and 78,891.14 is: 108,903.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,614.21 : 174,781.41 = 78,891.14 : x
  2. Step 2: Convert to fraction form
    126,614.21/174,781.41 = 78,891.14/x
  3. Step 3: Cross multiply
    126,614.21x = 174,781.41 × 78,891.14
  4. Step 4: Simplify right side
    126,614.21x = 13,788,703,811.80
  5. Step 5: Solve for x
    x = 13,788,703,811.80/126,614.21
  6. Step 6: Final answer
    x = 108,903.29

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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.