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Finding the Fourth Proportional to 108,480.92, 149,709.30 and 60,731.42

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Solution

The fourth proportional to 108,480.92, 149,709.30 and 60,731.42 is: 83,812.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,480.92 : 149,709.30 = 60,731.42 : x
  2. Step 2: Convert to fraction form
    108,480.92/149,709.30 = 60,731.42/x
  3. Step 3: Cross multiply
    108,480.92x = 149,709.30 × 60,731.42
  4. Step 4: Simplify right side
    108,480.92x = 9,092,058,376.21
  5. Step 5: Solve for x
    x = 9,092,058,376.21/108,480.92
  6. Step 6: Final answer
    x = 83,812.51

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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.