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Finding the Third Proportional to 135,108 and 210,316.50

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Solution

The third proportional to 135,108 and 210,316.50 is: 327,390.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,108 : 210,316.50 = 210,316.50 : x
  2. Step 2: Convert to fraction form
    135,108/210,316.50 = 210,316.50/x
  3. Step 3: Cross multiply
    135,108x = 210,316.50 × 210,316.50
  4. Step 4: Simplify right side
    135,108x = 44,233,030,172.25
  5. Step 5: Solve for x
    x = 44,233,030,172.25/135,108
  6. Step 6: Final answer
    x = 327,390.16

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.