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Finding the Fourth Proportional to 161,375.34, 241,899.50 and 81,170.96

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Solution

The fourth proportional to 161,375.34, 241,899.50 and 81,170.96 is: 121,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,375.34 : 241,899.50 = 81,170.96 : x
  2. Step 2: Convert to fraction form
    161,375.34/241,899.50 = 81,170.96/x
  3. Step 3: Cross multiply
    161,375.34x = 241,899.50 × 81,170.96
  4. Step 4: Simplify right side
    161,375.34x = 19,635,214,638.52
  5. Step 5: Solve for x
    x = 19,635,214,638.52/161,375.34
  6. Step 6: Final answer
    x = 121,674.20

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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.