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Finding the Fourth Proportional to 120,836.88, 166,754.70 and 73,090.08

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Solution

The fourth proportional to 120,836.88, 166,754.70 and 73,090.08 is: 100,864.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,836.88 : 166,754.70 = 73,090.08 : x
  2. Step 2: Convert to fraction form
    120,836.88/166,754.70 = 73,090.08/x
  3. Step 3: Cross multiply
    120,836.88x = 166,754.70 × 73,090.08
  4. Step 4: Simplify right side
    120,836.88x = 12,188,114,363.38
  5. Step 5: Solve for x
    x = 12,188,114,363.38/120,836.88
  6. Step 6: Final answer
    x = 100,864.19

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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.