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Finding the Fourth Proportional to 120,477.89, 166,260.47 and 66,763.80

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Solution

The fourth proportional to 120,477.89, 166,260.47 and 66,763.80 is: 92,134.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,477.89 : 166,260.47 = 66,763.80 : x
  2. Step 2: Convert to fraction form
    120,477.89/166,260.47 = 66,763.80/x
  3. Step 3: Cross multiply
    120,477.89x = 166,260.47 × 66,763.80
  4. Step 4: Simplify right side
    120,477.89x = 11,100,180,933.90
  5. Step 5: Solve for x
    x = 11,100,180,933.90/120,477.89
  6. Step 6: Final answer
    x = 92,134.59

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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.