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Finding the Fourth Proportional to 108,581.61, 149,850.92 and 68,329.88

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Solution

The fourth proportional to 108,581.61, 149,850.92 and 68,329.88 is: 94,300.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,581.61 : 149,850.92 = 68,329.88 : x
  2. Step 2: Convert to fraction form
    108,581.61/149,850.92 = 68,329.88/x
  3. Step 3: Cross multiply
    108,581.61x = 149,850.92 × 68,329.88
  4. Step 4: Simplify right side
    108,581.61x = 10,239,295,381.49
  5. Step 5: Solve for x
    x = 10,239,295,381.49/108,581.61
  6. Step 6: Final answer
    x = 94,300.46

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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.