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Finding the Third Proportional to 161,916 and 245,136

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Solution

The third proportional to 161,916 and 245,136 is: 371,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,916 : 245,136 = 245,136 : x
  2. Step 2: Convert to fraction form
    161,916/245,136 = 245,136/x
  3. Step 3: Cross multiply
    161,916x = 245,136 × 245,136
  4. Step 4: Simplify right side
    161,916x = 60,091,658,496
  5. Step 5: Solve for x
    x = 60,091,658,496/161,916
  6. Step 6: Final answer
    x = 371,128.60

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.