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Finding the Third Proportional to 66,313,738 and 142,705,174

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Solution

The third proportional to 66,313,738 and 142,705,174 is: 307,097,251.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,313,738 : 142,705,174 = 142,705,174 : x
  2. Step 2: Convert to fraction form
    66,313,738/142,705,174 = 142,705,174/x
  3. Step 3: Cross multiply
    66,313,738x = 142,705,174 × 142,705,174
  4. Step 4: Simplify right side
    66,313,738x = 20,364,766,686,370,276
  5. Step 5: Solve for x
    x = 20,364,766,686,370,276/66,313,738
  6. Step 6: Final answer
    x = 307,097,251.65

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.