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Finding the Third Proportional to 66,145.50 and 142,659

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Solution

The third proportional to 66,145.50 and 142,659 is: 307,679.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,145.50 : 142,659 = 142,659 : x
  2. Step 2: Convert to fraction form
    66,145.50/142,659 = 142,659/x
  3. Step 3: Cross multiply
    66,145.50x = 142,659 × 142,659
  4. Step 4: Simplify right side
    66,145.50x = 20,351,590,281
  5. Step 5: Solve for x
    x = 20,351,590,281/66,145.50
  6. Step 6: Final answer
    x = 307,679.14

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.