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Finding the Fourth Proportional to 161,144.10, 241,720.92 and 76,913.13

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Solution

The fourth proportional to 161,144.10, 241,720.92 and 76,913.13 is: 115,371.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,144.10 : 241,720.92 = 76,913.13 : x
  2. Step 2: Convert to fraction form
    161,144.10/241,720.92 = 76,913.13/x
  3. Step 3: Cross multiply
    161,144.10x = 241,720.92 × 76,913.13
  4. Step 4: Simplify right side
    161,144.10x = 18,591,512,543.68
  5. Step 5: Solve for x
    x = 18,591,512,543.68/161,144.10
  6. Step 6: Final answer
    x = 115,371.97

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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.