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Finding the Fourth Proportional to 108,169.86, 162,254.90 and 28,207.75

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Solution

The fourth proportional to 108,169.86, 162,254.90 and 28,207.75 is: 42,311.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,169.86 : 162,254.90 = 28,207.75 : x
  2. Step 2: Convert to fraction form
    108,169.86/162,254.90 = 28,207.75/x
  3. Step 3: Cross multiply
    108,169.86x = 162,254.90 × 28,207.75
  4. Step 4: Simplify right side
    108,169.86x = 4,576,845,655.48
  5. Step 5: Solve for x
    x = 4,576,845,655.48/108,169.86
  6. Step 6: Final answer
    x = 42,311.65

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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.