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Finding the Fourth Proportional to 126,722.70, 190,084.05 and 125,847.90

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Solution

The fourth proportional to 126,722.70, 190,084.05 and 125,847.90 is: 188,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,722.70 : 190,084.05 = 125,847.90 : x
  2. Step 2: Convert to fraction form
    126,722.70/190,084.05 = 125,847.90/x
  3. Step 3: Cross multiply
    126,722.70x = 190,084.05 × 125,847.90
  4. Step 4: Simplify right side
    126,722.70x = 23,921,678,516.00
  5. Step 5: Solve for x
    x = 23,921,678,516.00/126,722.70
  6. Step 6: Final answer
    x = 188,771.85

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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.