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Finding the Third Proportional to 86,997 and 130,455

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Solution

The third proportional to 86,997 and 130,455 is: 195,621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,997 : 130,455 = 130,455 : x
  2. Step 2: Convert to fraction form
    86,997/130,455 = 130,455/x
  3. Step 3: Cross multiply
    86,997x = 130,455 × 130,455
  4. Step 4: Simplify right side
    86,997x = 17,018,507,025
  5. Step 5: Solve for x
    x = 17,018,507,025/86,997
  6. Step 6: Final answer
    x = 195,621.77

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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.