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Finding the Fourth Proportional to 120,912.60, 169,452.60 and 120,912.60

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Solution

The fourth proportional to 120,912.60, 169,452.60 and 120,912.60 is: 169,452.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,912.60 : 169,452.60 = 120,912.60 : x
  2. Step 2: Convert to fraction form
    120,912.60/169,452.60 = 120,912.60/x
  3. Step 3: Cross multiply
    120,912.60x = 169,452.60 × 120,912.60
  4. Step 4: Simplify right side
    120,912.60x = 20,488,954,442.76
  5. Step 5: Solve for x
    x = 20,488,954,442.76/120,912.60
  6. Step 6: Final answer
    x = 169,452.60

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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.