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Finding the Fourth Proportional to 108,860.31, 150,218.92 and 61,104.43

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Solution

The fourth proportional to 108,860.31, 150,218.92 and 61,104.43 is: 84,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,860.31 : 150,218.92 = 61,104.43 : x
  2. Step 2: Convert to fraction form
    108,860.31/150,218.92 = 61,104.43/x
  3. Step 3: Cross multiply
    108,860.31x = 150,218.92 × 61,104.43
  4. Step 4: Simplify right side
    108,860.31x = 9,179,041,481.82
  5. Step 5: Solve for x
    x = 9,179,041,481.82/108,860.31
  6. Step 6: Final answer
    x = 84,319.45

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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.