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Finding the Fourth Proportional to 110,755.80, 166,133.70 and 81,012.60

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Solution

The fourth proportional to 110,755.80, 166,133.70 and 81,012.60 is: 121,518.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,755.80 : 166,133.70 = 81,012.60 : x
  2. Step 2: Convert to fraction form
    110,755.80/166,133.70 = 81,012.60/x
  3. Step 3: Cross multiply
    110,755.80x = 166,133.70 × 81,012.60
  4. Step 4: Simplify right side
    110,755.80x = 13,458,922,984.62
  5. Step 5: Solve for x
    x = 13,458,922,984.62/110,755.80
  6. Step 6: Final answer
    x = 121,518.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.