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Finding the Third Proportional to 72,623,739 and 156,724,215

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Solution

The third proportional to 72,623,739 and 156,724,215 is: 338,215,573.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,623,739 : 156,724,215 = 156,724,215 : x
  2. Step 2: Convert to fraction form
    72,623,739/156,724,215 = 156,724,215/x
  3. Step 3: Cross multiply
    72,623,739x = 156,724,215 × 156,724,215
  4. Step 4: Simplify right side
    72,623,739x = 24,562,479,567,366,224
  5. Step 5: Solve for x
    x = 24,562,479,567,366,224/72,623,739
  6. Step 6: Final answer
    x = 338,215,573.94

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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.