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Finding the Third Proportional to 136,117,042 and 209,221,647

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Solution

The third proportional to 136,117,042 and 209,221,647 is: 321,588,663.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,117,042 : 209,221,647 = 209,221,647 : x
  2. Step 2: Convert to fraction form
    136,117,042/209,221,647 = 209,221,647/x
  3. Step 3: Cross multiply
    136,117,042x = 209,221,647 × 209,221,647
  4. Step 4: Simplify right side
    136,117,042x = 43,773,697,573,392,608
  5. Step 5: Solve for x
    x = 43,773,697,573,392,608/136,117,042
  6. Step 6: Final answer
    x = 321,588,663.18

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.