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Finding the Third Proportional to 78,759.50 and 170,641

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Solution

The third proportional to 78,759.50 and 170,641 is: 369,712.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,759.50 : 170,641 = 170,641 : x
  2. Step 2: Convert to fraction form
    78,759.50/170,641 = 170,641/x
  3. Step 3: Cross multiply
    78,759.50x = 170,641 × 170,641
  4. Step 4: Simplify right side
    78,759.50x = 29,118,350,881
  5. Step 5: Solve for x
    x = 29,118,350,881/78,759.50
  6. Step 6: Final answer
    x = 369,712.24

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.