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Finding the Fourth Proportional to 120,961.60, 169,521.20 and 120,961.60

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Solution

The fourth proportional to 120,961.60, 169,521.20 and 120,961.60 is: 169,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,961.60 : 169,521.20 = 120,961.60 : x
  2. Step 2: Convert to fraction form
    120,961.60/169,521.20 = 120,961.60/x
  3. Step 3: Cross multiply
    120,961.60x = 169,521.20 × 120,961.60
  4. Step 4: Simplify right side
    120,961.60x = 20,505,555,585.92
  5. Step 5: Solve for x
    x = 20,505,555,585.92/120,961.60
  6. Step 6: Final answer
    x = 169,521.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.