Home / 126,975.20-190,462.80-115,311.20

Finding the Fourth Proportional to 126,975.20, 190,462.80 and 115,311.20

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Solution

The fourth proportional to 126,975.20, 190,462.80 and 115,311.20 is: 172,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,975.20 : 190,462.80 = 115,311.20 : x
  2. Step 2: Convert to fraction form
    126,975.20/190,462.80 = 115,311.20/x
  3. Step 3: Cross multiply
    126,975.20x = 190,462.80 × 115,311.20
  4. Step 4: Simplify right side
    126,975.20x = 21,962,494,023.36
  5. Step 5: Solve for x
    x = 21,962,494,023.36/126,975.20
  6. Step 6: Final answer
    x = 172,966.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.