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Finding the Fourth Proportional to 108,991.67, 163,487.28 and 30,105.66

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Solution

The fourth proportional to 108,991.67, 163,487.28 and 30,105.66 is: 45,158.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,991.67 : 163,487.28 = 30,105.66 : x
  2. Step 2: Convert to fraction form
    108,991.67/163,487.28 = 30,105.66/x
  3. Step 3: Cross multiply
    108,991.67x = 163,487.28 × 30,105.66
  4. Step 4: Simplify right side
    108,991.67x = 4,921,892,466.00
  5. Step 5: Solve for x
    x = 4,921,892,466.00/108,991.67
  6. Step 6: Final answer
    x = 45,158.43

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1.5x scale

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.