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Finding the Fourth Proportional to 108,028.92, 149,038.32 and 67,672.44

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Solution

The fourth proportional to 108,028.92, 149,038.32 and 67,672.44 is: 93,361.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,028.92 : 149,038.32 = 67,672.44 : x
  2. Step 2: Convert to fraction form
    108,028.92/149,038.32 = 67,672.44/x
  3. Step 3: Cross multiply
    108,028.92x = 149,038.32 × 67,672.44
  4. Step 4: Simplify right side
    108,028.92x = 10,085,786,767.90
  5. Step 5: Solve for x
    x = 10,085,786,767.90/108,028.92
  6. Step 6: Final answer
    x = 93,361.91

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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.