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Finding the Fourth Proportional to 192,767.13, 289,170.27 and 66,390.87

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Solution

The fourth proportional to 192,767.13, 289,170.27 and 66,390.87 is: 99,593.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,767.13 : 289,170.27 = 66,390.87 : x
  2. Step 2: Convert to fraction form
    192,767.13/289,170.27 = 66,390.87/x
  3. Step 3: Cross multiply
    192,767.13x = 289,170.27 × 66,390.87
  4. Step 4: Simplify right side
    192,767.13x = 19,198,265,803.43
  5. Step 5: Solve for x
    x = 19,198,265,803.43/192,767.13
  6. Step 6: Final answer
    x = 99,593.05

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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.