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Finding the Fourth Proportional to 120,359.82, 166,098.30 and 66,644.73

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Solution

The fourth proportional to 120,359.82, 166,098.30 and 66,644.73 is: 91,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,359.82 : 166,098.30 = 66,644.73 : x
  2. Step 2: Convert to fraction form
    120,359.82/166,098.30 = 66,644.73/x
  3. Step 3: Cross multiply
    120,359.82x = 166,098.30 × 66,644.73
  4. Step 4: Simplify right side
    120,359.82x = 11,069,576,356.96
  5. Step 5: Solve for x
    x = 11,069,576,356.96/120,359.82
  6. Step 6: Final answer
    x = 91,970.70

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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.