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Finding the Fourth Proportional to 120,512.66, 166,313.07 and 66,798.86

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Solution

The fourth proportional to 120,512.66, 166,313.07 and 66,798.86 is: 92,185.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,512.66 : 166,313.07 = 66,798.86 : x
  2. Step 2: Convert to fraction form
    120,512.66/166,313.07 = 66,798.86/x
  3. Step 3: Cross multiply
    120,512.66x = 166,313.07 × 66,798.86
  4. Step 4: Simplify right side
    120,512.66x = 11,109,522,647.53
  5. Step 5: Solve for x
    x = 11,109,522,647.53/120,512.66
  6. Step 6: Final answer
    x = 92,185.53

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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.