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Finding the Third Proportional to 66,204.21 and 143,409.87

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Solution

The third proportional to 66,204.21 and 143,409.87 is: 310,650.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,204.21 : 143,409.87 = 143,409.87 : x
  2. Step 2: Convert to fraction form
    66,204.21/143,409.87 = 143,409.87/x
  3. Step 3: Cross multiply
    66,204.21x = 143,409.87 × 143,409.87
  4. Step 4: Simplify right side
    66,204.21x = 20,566,390,006.74
  5. Step 5: Solve for x
    x = 20,566,390,006.74/66,204.21
  6. Step 6: Final answer
    x = 310,650.78

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.