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Finding the Fourth Proportional to 108,860.64, 150,226.56 and 61,112.88

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Solution

The fourth proportional to 108,860.64, 150,226.56 and 61,112.88 is: 84,335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,860.64 : 150,226.56 = 61,112.88 : x
  2. Step 2: Convert to fraction form
    108,860.64/150,226.56 = 61,112.88/x
  3. Step 3: Cross multiply
    108,860.64x = 150,226.56 × 61,112.88
  4. Step 4: Simplify right side
    108,860.64x = 9,180,777,734.09
  5. Step 5: Solve for x
    x = 9,180,777,734.09/108,860.64
  6. Step 6: Final answer
    x = 84,335.14

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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.