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Finding the Third Proportional to 66,678.75 and 144,423.75

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Solution

The third proportional to 66,678.75 and 144,423.75 is: 312,816.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,678.75 : 144,423.75 = 144,423.75 : x
  2. Step 2: Convert to fraction form
    66,678.75/144,423.75 = 144,423.75/x
  3. Step 3: Cross multiply
    66,678.75x = 144,423.75 × 144,423.75
  4. Step 4: Simplify right side
    66,678.75x = 20,858,219,564.06
  5. Step 5: Solve for x
    x = 20,858,219,564.06/66,678.75
  6. Step 6: Final answer
    x = 312,816.60

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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.