Home / 126,627.20-189,940.80-74,009.60

Finding the Fourth Proportional to 126,627.20, 189,940.80 and 74,009.60

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Solution

The fourth proportional to 126,627.20, 189,940.80 and 74,009.60 is: 111,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,627.20 : 189,940.80 = 74,009.60 : x
  2. Step 2: Convert to fraction form
    126,627.20/189,940.80 = 74,009.60/x
  3. Step 3: Cross multiply
    126,627.20x = 189,940.80 × 74,009.60
  4. Step 4: Simplify right side
    126,627.20x = 14,057,442,631.68
  5. Step 5: Solve for x
    x = 14,057,442,631.68/126,627.20
  6. Step 6: Final answer
    x = 111,014.40

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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.