Home / 120,880.35-166,664.89-80,505.60

Finding the Fourth Proportional to 120,880.35, 166,664.89 and 80,505.60

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Solution

The fourth proportional to 120,880.35, 166,664.89 and 80,505.60 is: 110,997.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,880.35 : 166,664.89 = 80,505.60 : x
  2. Step 2: Convert to fraction form
    120,880.35/166,664.89 = 80,505.60/x
  3. Step 3: Cross multiply
    120,880.35x = 166,664.89 × 80,505.60
  4. Step 4: Simplify right side
    120,880.35x = 13,417,456,444.02
  5. Step 5: Solve for x
    x = 13,417,456,444.02/120,880.35
  6. Step 6: Final answer
    x = 110,997.83

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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.