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Finding the Fourth Proportional to 120,783.56, 166,654.46 and 73,035.88

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Solution

The fourth proportional to 120,783.56, 166,654.46 and 73,035.88 is: 100,773.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,783.56 : 166,654.46 = 73,035.88 : x
  2. Step 2: Convert to fraction form
    120,783.56/166,654.46 = 73,035.88/x
  3. Step 3: Cross multiply
    120,783.56x = 166,654.46 × 73,035.88
  4. Step 4: Simplify right side
    120,783.56x = 12,171,754,907.98
  5. Step 5: Solve for x
    x = 12,171,754,907.98/120,783.56
  6. Step 6: Final answer
    x = 100,773.28

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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.