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Finding the Fourth Proportional to 120,889.44, 166,817.64 and 69,905.48

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Solution

The fourth proportional to 120,889.44, 166,817.64 and 69,905.48 is: 96,463.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,889.44 : 166,817.64 = 69,905.48 : x
  2. Step 2: Convert to fraction form
    120,889.44/166,817.64 = 69,905.48/x
  3. Step 3: Cross multiply
    120,889.44x = 166,817.64 × 69,905.48
  4. Step 4: Simplify right side
    120,889.44x = 11,661,466,362.58
  5. Step 5: Solve for x
    x = 11,661,466,362.58/120,889.44
  6. Step 6: Final answer
    x = 96,463.90

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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.