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Finding the Fourth Proportional to 126,469.70, 189,715.35 and 43,363.70

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Solution

The fourth proportional to 126,469.70, 189,715.35 and 43,363.70 is: 65,049.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,469.70 : 189,715.35 = 43,363.70 : x
  2. Step 2: Convert to fraction form
    126,469.70/189,715.35 = 43,363.70/x
  3. Step 3: Cross multiply
    126,469.70x = 189,715.35 × 43,363.70
  4. Step 4: Simplify right side
    126,469.70x = 8,226,759,522.80
  5. Step 5: Solve for x
    x = 8,226,759,522.80/126,469.70
  6. Step 6: Final answer
    x = 65,049.25

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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.