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Finding the Fourth Proportional to 129,239, 193,858.50 and 35,744.75

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Solution

The fourth proportional to 129,239, 193,858.50 and 35,744.75 is: 53,617.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,239 : 193,858.50 = 35,744.75 : x
  2. Step 2: Convert to fraction form
    129,239/193,858.50 = 35,744.75/x
  3. Step 3: Cross multiply
    129,239x = 193,858.50 × 35,744.75
  4. Step 4: Simplify right side
    129,239x = 6,929,423,617.88
  5. Step 5: Solve for x
    x = 6,929,423,617.88/129,239
  6. Step 6: Final answer
    x = 53,617.13

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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.