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Finding the Third Proportional to 86,899.50 and 190,408.50

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Solution

The third proportional to 86,899.50 and 190,408.50 is: 417,210.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,899.50 : 190,408.50 = 190,408.50 : x
  2. Step 2: Convert to fraction form
    86,899.50/190,408.50 = 190,408.50/x
  3. Step 3: Cross multiply
    86,899.50x = 190,408.50 × 190,408.50
  4. Step 4: Simplify right side
    86,899.50x = 36,255,396,872.25
  5. Step 5: Solve for x
    x = 36,255,396,872.25/86,899.50
  6. Step 6: Final answer
    x = 417,210.65

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.