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Finding the Third Proportional to 72,579 and 154,999.50

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Solution

The third proportional to 72,579 and 154,999.50 is: 331,016.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579 : 154,999.50 = 154,999.50 : x
  2. Step 2: Convert to fraction form
    72,579/154,999.50 = 154,999.50/x
  3. Step 3: Cross multiply
    72,579x = 154,999.50 × 154,999.50
  4. Step 4: Simplify right side
    72,579x = 24,024,845,000.25
  5. Step 5: Solve for x
    x = 24,024,845,000.25/72,579
  6. Step 6: Final answer
    x = 331,016.48

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.