Home / 126,949.20-190,423.80-74,331.60

Finding the Fourth Proportional to 126,949.20, 190,423.80 and 74,331.60

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Solution

The fourth proportional to 126,949.20, 190,423.80 and 74,331.60 is: 111,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,949.20 : 190,423.80 = 74,331.60 : x
  2. Step 2: Convert to fraction form
    126,949.20/190,423.80 = 74,331.60/x
  3. Step 3: Cross multiply
    126,949.20x = 190,423.80 × 74,331.60
  4. Step 4: Simplify right side
    126,949.20x = 14,154,505,732.08
  5. Step 5: Solve for x
    x = 14,154,505,732.08/126,949.20
  6. Step 6: Final answer
    x = 111,497.40

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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.