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Finding the Third Proportional to 129,142 and 193,706

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Solution

The third proportional to 129,142 and 193,706 is: 290,548.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,142 : 193,706 = 193,706 : x
  2. Step 2: Convert to fraction form
    129,142/193,706 = 193,706/x
  3. Step 3: Cross multiply
    129,142x = 193,706 × 193,706
  4. Step 4: Simplify right side
    129,142x = 37,522,014,436
  5. Step 5: Solve for x
    x = 37,522,014,436/129,142
  6. Step 6: Final answer
    x = 290,548.50

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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.