Home / 126,912.30-190,429.20-84,812.55

Finding the Fourth Proportional to 126,912.30, 190,429.20 and 84,812.55

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Solution

The fourth proportional to 126,912.30, 190,429.20 and 84,812.55 is: 127,259.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,912.30 : 190,429.20 = 84,812.55 : x
  2. Step 2: Convert to fraction form
    126,912.30/190,429.20 = 84,812.55/x
  3. Step 3: Cross multiply
    126,912.30x = 190,429.20 × 84,812.55
  4. Step 4: Simplify right side
    126,912.30x = 16,150,786,046.46
  5. Step 5: Solve for x
    x = 16,150,786,046.46/126,912.30
  6. Step 6: Final answer
    x = 127,259.42

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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.