Home / 80,645.60-111,194.16-67,236.32

Finding the Fourth Proportional to 80,645.60, 111,194.16 and 67,236.32

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Solution

The fourth proportional to 80,645.60, 111,194.16 and 67,236.32 is: 92,705.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,645.60 : 111,194.16 = 67,236.32 : x
  2. Step 2: Convert to fraction form
    80,645.60/111,194.16 = 67,236.32/x
  3. Step 3: Cross multiply
    80,645.60x = 111,194.16 × 67,236.32
  4. Step 4: Simplify right side
    80,645.60x = 7,476,286,123.89
  5. Step 5: Solve for x
    x = 7,476,286,123.89/80,645.60
  6. Step 6: Final answer
    x = 92,705.44

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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.