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Finding the Fourth Proportional to 128,874.92, 193,301.03 and 35,380.67

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Solution

The fourth proportional to 128,874.92, 193,301.03 and 35,380.67 is: 53,067.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,874.92 : 193,301.03 = 35,380.67 : x
  2. Step 2: Convert to fraction form
    128,874.92/193,301.03 = 35,380.67/x
  3. Step 3: Cross multiply
    128,874.92x = 193,301.03 × 35,380.67
  4. Step 4: Simplify right side
    128,874.92x = 6,839,119,075.04
  5. Step 5: Solve for x
    x = 6,839,119,075.04/128,874.92
  6. Step 6: Final answer
    x = 53,067.88

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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.