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Finding the Fourth Proportional to 108,481.17, 149,709.65 and 60,731.67

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Solution

The fourth proportional to 108,481.17, 149,709.65 and 60,731.67 is: 83,812.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,481.17 : 149,709.65 = 60,731.67 : x
  2. Step 2: Convert to fraction form
    108,481.17/149,709.65 = 60,731.67/x
  3. Step 3: Cross multiply
    108,481.17x = 149,709.65 × 60,731.67
  4. Step 4: Simplify right side
    108,481.17x = 9,092,116,755.96
  5. Step 5: Solve for x
    x = 9,092,116,755.96/108,481.17
  6. Step 6: Final answer
    x = 83,812.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.