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Finding the Third Proportional to 66,928 and 124,280

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Solution

The third proportional to 66,928 and 124,280 is: 230,778.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,928 : 124,280 = 124,280 : x
  2. Step 2: Convert to fraction form
    66,928/124,280 = 124,280/x
  3. Step 3: Cross multiply
    66,928x = 124,280 × 124,280
  4. Step 4: Simplify right side
    66,928x = 15,445,518,400
  5. Step 5: Solve for x
    x = 15,445,518,400/66,928
  6. Step 6: Final answer
    x = 230,778.13

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.