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Finding the Fourth Proportional to 128,794.89, 193,190.18 and 35,300.64

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Solution

The fourth proportional to 128,794.89, 193,190.18 and 35,300.64 is: 52,950.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,794.89 : 193,190.18 = 35,300.64 : x
  2. Step 2: Convert to fraction form
    128,794.89/193,190.18 = 35,300.64/x
  3. Step 3: Cross multiply
    128,794.89x = 193,190.18 × 35,300.64
  4. Step 4: Simplify right side
    128,794.89x = 6,819,736,819.21
  5. Step 5: Solve for x
    x = 6,819,736,819.21/128,794.89
  6. Step 6: Final answer
    x = 52,950.37

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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.