Home / 120,486.24-166,255.20-66,768.60

Finding the Fourth Proportional to 120,486.24, 166,255.20 and 66,768.60

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Solution

The fourth proportional to 120,486.24, 166,255.20 and 66,768.60 is: 92,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,486.24 : 166,255.20 = 66,768.60 : x
  2. Step 2: Convert to fraction form
    120,486.24/166,255.20 = 66,768.60/x
  3. Step 3: Cross multiply
    120,486.24x = 166,255.20 × 66,768.60
  4. Step 4: Simplify right side
    120,486.24x = 11,100,626,946.72
  5. Step 5: Solve for x
    x = 11,100,626,946.72/120,486.24
  6. Step 6: Final answer
    x = 92,131.91

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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.