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Finding the Third Proportional to 56,718 and 124,290

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Solution

The third proportional to 56,718 and 124,290 is: 272,365.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,718 : 124,290 = 124,290 : x
  2. Step 2: Convert to fraction form
    56,718/124,290 = 124,290/x
  3. Step 3: Cross multiply
    56,718x = 124,290 × 124,290
  4. Step 4: Simplify right side
    56,718x = 15,448,004,100
  5. Step 5: Solve for x
    x = 15,448,004,100/56,718
  6. Step 6: Final answer
    x = 272,365.11

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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.