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Finding the Third Proportional to 64,090 and 140,660

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Solution

The third proportional to 64,090 and 140,660 is: 308,710.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,090 : 140,660 = 140,660 : x
  2. Step 2: Convert to fraction form
    64,090/140,660 = 140,660/x
  3. Step 3: Cross multiply
    64,090x = 140,660 × 140,660
  4. Step 4: Simplify right side
    64,090x = 19,785,235,600
  5. Step 5: Solve for x
    x = 19,785,235,600/64,090
  6. Step 6: Final answer
    x = 308,710.18

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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.