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Finding the Fourth Proportional to 120,627.88, 166,486.41 and 66,930.20

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Solution

The fourth proportional to 120,627.88, 166,486.41 and 66,930.20 is: 92,374.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,627.88 : 166,486.41 = 66,930.20 : x
  2. Step 2: Convert to fraction form
    120,627.88/166,486.41 = 66,930.20/x
  3. Step 3: Cross multiply
    120,627.88x = 166,486.41 × 66,930.20
  4. Step 4: Simplify right side
    120,627.88x = 11,142,968,698.72
  5. Step 5: Solve for x
    x = 11,142,968,698.72/120,627.88
  6. Step 6: Final answer
    x = 92,374.73

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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.