Home / 126,937.20-190,405.80-115,273.20

Finding the Fourth Proportional to 126,937.20, 190,405.80 and 115,273.20

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Solution

The fourth proportional to 126,937.20, 190,405.80 and 115,273.20 is: 172,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,937.20 : 190,405.80 = 115,273.20 : x
  2. Step 2: Convert to fraction form
    126,937.20/190,405.80 = 115,273.20/x
  3. Step 3: Cross multiply
    126,937.20x = 190,405.80 × 115,273.20
  4. Step 4: Simplify right side
    126,937.20x = 21,948,685,864.56
  5. Step 5: Solve for x
    x = 21,948,685,864.56/126,937.20
  6. Step 6: Final answer
    x = 172,909.80

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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.