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Finding the Fourth Proportional to 108,893.70, 150,269.40 and 61,149.06

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Solution

The fourth proportional to 108,893.70, 150,269.40 and 61,149.06 is: 84,383.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,893.70 : 150,269.40 = 61,149.06 : x
  2. Step 2: Convert to fraction form
    108,893.70/150,269.40 = 61,149.06/x
  3. Step 3: Cross multiply
    108,893.70x = 150,269.40 × 61,149.06
  4. Step 4: Simplify right side
    108,893.70x = 9,188,832,556.76
  5. Step 5: Solve for x
    x = 9,188,832,556.76/108,893.70
  6. Step 6: Final answer
    x = 84,383.51

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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.