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Finding the Third Proportional to 74,572 and 111,918

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Solution

The third proportional to 74,572 and 111,918 is: 167,967.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,572 : 111,918 = 111,918 : x
  2. Step 2: Convert to fraction form
    74,572/111,918 = 111,918/x
  3. Step 3: Cross multiply
    74,572x = 111,918 × 111,918
  4. Step 4: Simplify right side
    74,572x = 12,525,638,724
  5. Step 5: Solve for x
    x = 12,525,638,724/74,572
  6. Step 6: Final answer
    x = 167,967.05

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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.