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Finding the Fourth Proportional to 129,992.10, 194,660.10 and 103,748.10

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Solution

The fourth proportional to 129,992.10, 194,660.10 and 103,748.10 is: 155,360.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,992.10 : 194,660.10 = 103,748.10 : x
  2. Step 2: Convert to fraction form
    129,992.10/194,660.10 = 103,748.10/x
  3. Step 3: Cross multiply
    129,992.10x = 194,660.10 × 103,748.10
  4. Step 4: Simplify right side
    129,992.10x = 20,195,615,520.81
  5. Step 5: Solve for x
    x = 20,195,615,520.81/129,992.10
  6. Step 6: Final answer
    x = 155,360.33

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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.