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Finding the Fourth Proportional to 108,265.88, 149,437.10 and 74,279.90

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Solution

The fourth proportional to 108,265.88, 149,437.10 and 74,279.90 is: 102,526.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,265.88 : 149,437.10 = 74,279.90 : x
  2. Step 2: Convert to fraction form
    108,265.88/149,437.10 = 74,279.90/x
  3. Step 3: Cross multiply
    108,265.88x = 149,437.10 × 74,279.90
  4. Step 4: Simplify right side
    108,265.88x = 11,100,172,844.29
  5. Step 5: Solve for x
    x = 11,100,172,844.29/108,265.88
  6. Step 6: Final answer
    x = 102,526.97

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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.