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Finding the Fourth Proportional to 100,676.43, 151,131.30 and 54,020.43

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Solution

The fourth proportional to 100,676.43, 151,131.30 and 54,020.43 is: 81,093.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,676.43 : 151,131.30 = 54,020.43 : x
  2. Step 2: Convert to fraction form
    100,676.43/151,131.30 = 54,020.43/x
  3. Step 3: Cross multiply
    100,676.43x = 151,131.30 × 54,020.43
  4. Step 4: Simplify right side
    100,676.43x = 8,164,177,812.46
  5. Step 5: Solve for x
    x = 8,164,177,812.46/100,676.43
  6. Step 6: Final answer
    x = 81,093.24

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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.