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Finding the Fourth Proportional to 108,636.61, 163,018.49 and 45,451.44

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Solution

The fourth proportional to 108,636.61, 163,018.49 and 45,451.44 is: 68,203.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,636.61 : 163,018.49 = 45,451.44 : x
  2. Step 2: Convert to fraction form
    108,636.61/163,018.49 = 45,451.44/x
  3. Step 3: Cross multiply
    108,636.61x = 163,018.49 × 45,451.44
  4. Step 4: Simplify right side
    108,636.61x = 7,409,425,000.75
  5. Step 5: Solve for x
    x = 7,409,425,000.75/108,636.61
  6. Step 6: Final answer
    x = 68,203.76

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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.