Home / 126,763.20-190,144.80-74,145.60

Finding the Fourth Proportional to 126,763.20, 190,144.80 and 74,145.60

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Solution

The fourth proportional to 126,763.20, 190,144.80 and 74,145.60 is: 111,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,763.20 : 190,144.80 = 74,145.60 : x
  2. Step 2: Convert to fraction form
    126,763.20/190,144.80 = 74,145.60/x
  3. Step 3: Cross multiply
    126,763.20x = 190,144.80 × 74,145.60
  4. Step 4: Simplify right side
    126,763.20x = 14,098,400,282.88
  5. Step 5: Solve for x
    x = 14,098,400,282.88/126,763.20
  6. Step 6: Final answer
    x = 111,218.40

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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.