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Finding the Fourth Proportional to 108,791.12, 150,131.40 and 61,044.68

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Solution

The fourth proportional to 108,791.12, 150,131.40 and 61,044.68 is: 84,241.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,791.12 : 150,131.40 = 61,044.68 : x
  2. Step 2: Convert to fraction form
    108,791.12/150,131.40 = 61,044.68/x
  3. Step 3: Cross multiply
    108,791.12x = 150,131.40 × 61,044.68
  4. Step 4: Simplify right side
    108,791.12x = 9,164,723,270.95
  5. Step 5: Solve for x
    x = 9,164,723,270.95/108,791.12
  6. Step 6: Final answer
    x = 84,241.46

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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.