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Finding the Fourth Proportional to 120,976.60, 169,542.20 and 120,976.60

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Solution

The fourth proportional to 120,976.60, 169,542.20 and 120,976.60 is: 169,542.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,976.60 : 169,542.20 = 120,976.60 : x
  2. Step 2: Convert to fraction form
    120,976.60/169,542.20 = 120,976.60/x
  3. Step 3: Cross multiply
    120,976.60x = 169,542.20 × 120,976.60
  4. Step 4: Simplify right side
    120,976.60x = 20,510,638,912.52
  5. Step 5: Solve for x
    x = 20,510,638,912.52/120,976.60
  6. Step 6: Final answer
    x = 169,542.20

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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.