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Finding the Fourth Proportional to 128,954.60, 193,436.76 and 35,467.64

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Solution

The fourth proportional to 128,954.60, 193,436.76 and 35,467.64 is: 53,202.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,954.60 : 193,436.76 = 35,467.64 : x
  2. Step 2: Convert to fraction form
    128,954.60/193,436.76 = 35,467.64/x
  3. Step 3: Cross multiply
    128,954.60x = 193,436.76 × 35,467.64
  4. Step 4: Simplify right side
    128,954.60x = 6,860,745,366.45
  5. Step 5: Solve for x
    x = 6,860,745,366.45/128,954.60
  6. Step 6: Final answer
    x = 53,202.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.