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Finding the Third Proportional to 129,885.75 and 207,495

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Solution

The third proportional to 129,885.75 and 207,495 is: 331,477.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,885.75 : 207,495 = 207,495 : x
  2. Step 2: Convert to fraction form
    129,885.75/207,495 = 207,495/x
  3. Step 3: Cross multiply
    129,885.75x = 207,495 × 207,495
  4. Step 4: Simplify right side
    129,885.75x = 43,054,175,025
  5. Step 5: Solve for x
    x = 43,054,175,025/129,885.75
  6. Step 6: Final answer
    x = 331,477.28

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.