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Finding the Fourth Proportional to 108,466.56, 162,734.40 and 86,365.44

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Solution

The fourth proportional to 108,466.56, 162,734.40 and 86,365.44 is: 129,575.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,466.56 : 162,734.40 = 86,365.44 : x
  2. Step 2: Convert to fraction form
    108,466.56/162,734.40 = 86,365.44/x
  3. Step 3: Cross multiply
    108,466.56x = 162,734.40 × 86,365.44
  4. Step 4: Simplify right side
    108,466.56x = 14,054,628,059.14
  5. Step 5: Solve for x
    x = 14,054,628,059.14/108,466.56
  6. Step 6: Final answer
    x = 129,575.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.