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Finding the Third Proportional to 133,915.78 and 207,491.63

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Solution

The third proportional to 133,915.78 and 207,491.63 is: 321,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,915.78 : 207,491.63 = 207,491.63 : x
  2. Step 2: Convert to fraction form
    133,915.78/207,491.63 = 207,491.63/x
  3. Step 3: Cross multiply
    133,915.78x = 207,491.63 × 207,491.63
  4. Step 4: Simplify right side
    133,915.78x = 43,052,774,445.14
  5. Step 5: Solve for x
    x = 43,052,774,445.14/133,915.78
  6. Step 6: Final answer
    x = 321,491.42

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.