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Finding the Third Proportional to 72,783 and 115,740

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Solution

The third proportional to 72,783 and 115,740 is: 184,050.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,783 : 115,740 = 115,740 : x
  2. Step 2: Convert to fraction form
    72,783/115,740 = 115,740/x
  3. Step 3: Cross multiply
    72,783x = 115,740 × 115,740
  4. Step 4: Simplify right side
    72,783x = 13,395,747,600
  5. Step 5: Solve for x
    x = 13,395,747,600/72,783
  6. Step 6: Final answer
    x = 184,050.50

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.