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Finding the Third Proportional to 86,970 and 130,649

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Solution

The third proportional to 86,970 and 130,649 is: 196,264.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,970 : 130,649 = 130,649 : x
  2. Step 2: Convert to fraction form
    86,970/130,649 = 130,649/x
  3. Step 3: Cross multiply
    86,970x = 130,649 × 130,649
  4. Step 4: Simplify right side
    86,970x = 17,069,161,201
  5. Step 5: Solve for x
    x = 17,069,161,201/86,970
  6. Step 6: Final answer
    x = 196,264.93

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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.