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Finding the Fourth Proportional to 192,989.28, 289,484.58 and 136,659

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Solution

The fourth proportional to 192,989.28, 289,484.58 and 136,659 is: 204,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,989.28 : 289,484.58 = 136,659 : x
  2. Step 2: Convert to fraction form
    192,989.28/289,484.58 = 136,659/x
  3. Step 3: Cross multiply
    192,989.28x = 289,484.58 × 136,659
  4. Step 4: Simplify right side
    192,989.28x = 39,560,673,218.22
  5. Step 5: Solve for x
    x = 39,560,673,218.22/192,989.28
  6. Step 6: Final answer
    x = 204,988.97

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1.5x scale

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.