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Finding the Third Proportional to 56,920 and 124,729

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Solution

The third proportional to 56,920 and 124,729 is: 273,319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,920 : 124,729 = 124,729 : x
  2. Step 2: Convert to fraction form
    56,920/124,729 = 124,729/x
  3. Step 3: Cross multiply
    56,920x = 124,729 × 124,729
  4. Step 4: Simplify right side
    56,920x = 15,557,323,441
  5. Step 5: Solve for x
    x = 15,557,323,441/56,920
  6. Step 6: Final answer
    x = 273,319.10

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.