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Finding the Fourth Proportional to 190,755, 263,241.90 and 105,872.67

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Solution

The fourth proportional to 190,755, 263,241.90 and 105,872.67 is: 146,104.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,755 : 263,241.90 = 105,872.67 : x
  2. Step 2: Convert to fraction form
    190,755/263,241.90 = 105,872.67/x
  3. Step 3: Cross multiply
    190,755x = 263,241.90 × 105,872.67
  4. Step 4: Simplify right side
    190,755x = 27,870,122,808.87
  5. Step 5: Solve for x
    x = 27,870,122,808.87/190,755
  6. Step 6: Final answer
    x = 146,104.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.