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Finding the Fourth Proportional to 108,666, 149,959.62 and 63,375.39

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Solution

The fourth proportional to 108,666, 149,959.62 and 63,375.39 is: 87,458.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,666 : 149,959.62 = 63,375.39 : x
  2. Step 2: Convert to fraction form
    108,666/149,959.62 = 63,375.39/x
  3. Step 3: Cross multiply
    108,666x = 149,959.62 × 63,375.39
  4. Step 4: Simplify right side
    108,666x = 9,503,749,401.75
  5. Step 5: Solve for x
    x = 9,503,749,401.75/108,666
  6. Step 6: Final answer
    x = 87,458.35

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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.