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Finding the Third Proportional to 68,470 and 102,435

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Solution

The third proportional to 68,470 and 102,435 is: 153,248.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,470 : 102,435 = 102,435 : x
  2. Step 2: Convert to fraction form
    68,470/102,435 = 102,435/x
  3. Step 3: Cross multiply
    68,470x = 102,435 × 102,435
  4. Step 4: Simplify right side
    68,470x = 10,492,929,225
  5. Step 5: Solve for x
    x = 10,492,929,225/68,470
  6. Step 6: Final answer
    x = 153,248.56

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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.