Home / 126,871.20-190,306.80-74,253.60

Finding the Fourth Proportional to 126,871.20, 190,306.80 and 74,253.60

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Solution

The fourth proportional to 126,871.20, 190,306.80 and 74,253.60 is: 111,380.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,871.20 : 190,306.80 = 74,253.60 : x
  2. Step 2: Convert to fraction form
    126,871.20/190,306.80 = 74,253.60/x
  3. Step 3: Cross multiply
    126,871.20x = 190,306.80 × 74,253.60
  4. Step 4: Simplify right side
    126,871.20x = 14,130,965,004.48
  5. Step 5: Solve for x
    x = 14,130,965,004.48/126,871.20
  6. Step 6: Final answer
    x = 111,380.40

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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.