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Finding the Fourth Proportional to 108,706, 150,072.60 and 84,775.36

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Solution

The fourth proportional to 108,706, 150,072.60 and 84,775.36 is: 117,035.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,706 : 150,072.60 = 84,775.36 : x
  2. Step 2: Convert to fraction form
    108,706/150,072.60 = 84,775.36/x
  3. Step 3: Cross multiply
    108,706x = 150,072.60 × 84,775.36
  4. Step 4: Simplify right side
    108,706x = 12,722,458,691.14
  5. Step 5: Solve for x
    x = 12,722,458,691.14/108,706
  6. Step 6: Final answer
    x = 117,035.48

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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.