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Finding the Third Proportional to 103,813 and 155,178

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Solution

The third proportional to 103,813 and 155,178 is: 231,957.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,813 : 155,178 = 155,178 : x
  2. Step 2: Convert to fraction form
    103,813/155,178 = 155,178/x
  3. Step 3: Cross multiply
    103,813x = 155,178 × 155,178
  4. Step 4: Simplify right side
    103,813x = 24,080,211,684
  5. Step 5: Solve for x
    x = 24,080,211,684/103,813
  6. Step 6: Final answer
    x = 231,957.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.