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Finding the Fourth Proportional to 120,360.98, 166,103.30 and 66,645.94

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Solution

The fourth proportional to 120,360.98, 166,103.30 and 66,645.94 is: 91,974.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,360.98 : 166,103.30 = 66,645.94 : x
  2. Step 2: Convert to fraction form
    120,360.98/166,103.30 = 66,645.94/x
  3. Step 3: Cross multiply
    120,360.98x = 166,103.30 × 66,645.94
  4. Step 4: Simplify right side
    120,360.98x = 11,070,110,565.60
  5. Step 5: Solve for x
    x = 11,070,110,565.60/120,360.98
  6. Step 6: Final answer
    x = 91,974.25

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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.