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Finding the Third Proportional to 78,127.88 and 168,122.25

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Solution

The third proportional to 78,127.88 and 168,122.25 is: 361,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,127.88 : 168,122.25 = 168,122.25 : x
  2. Step 2: Convert to fraction form
    78,127.88/168,122.25 = 168,122.25/x
  3. Step 3: Cross multiply
    78,127.88x = 168,122.25 × 168,122.25
  4. Step 4: Simplify right side
    78,127.88x = 28,265,090,945.06
  5. Step 5: Solve for x
    x = 28,265,090,945.06/78,127.88
  6. Step 6: Final answer
    x = 361,779.85

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.