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Finding the Fourth Proportional to 120,999.31, 166,972.17 and 67,283.17

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Solution

The fourth proportional to 120,999.31, 166,972.17 and 67,283.17 is: 92,846.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,999.31 : 166,972.17 = 67,283.17 : x
  2. Step 2: Convert to fraction form
    120,999.31/166,972.17 = 67,283.17/x
  3. Step 3: Cross multiply
    120,999.31x = 166,972.17 × 67,283.17
  4. Step 4: Simplify right side
    120,999.31x = 11,234,416,899.38
  5. Step 5: Solve for x
    x = 11,234,416,899.38/120,999.31
  6. Step 6: Final answer
    x = 92,846.95

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1.5x scale

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.