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Finding the Fourth Proportional to 120,482.56, 166,245.72 and 80,256.32

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Solution

The fourth proportional to 120,482.56, 166,245.72 and 80,256.32 is: 110,740.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,482.56 : 166,245.72 = 80,256.32 : x
  2. Step 2: Convert to fraction form
    120,482.56/166,245.72 = 80,256.32/x
  3. Step 3: Cross multiply
    120,482.56x = 166,245.72 × 80,256.32
  4. Step 4: Simplify right side
    120,482.56x = 13,342,269,702.95
  5. Step 5: Solve for x
    x = 13,342,269,702.95/120,482.56
  6. Step 6: Final answer
    x = 110,740.26

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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.