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Finding the Third Proportional to 72,087,354 and 149,284,512

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Solution

The third proportional to 72,087,354 and 149,284,512 is: 309,150,832.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,087,354 : 149,284,512 = 149,284,512 : x
  2. Step 2: Convert to fraction form
    72,087,354/149,284,512 = 149,284,512/x
  3. Step 3: Cross multiply
    72,087,354x = 149,284,512 × 149,284,512
  4. Step 4: Simplify right side
    72,087,354x = 22,285,865,523,078,144
  5. Step 5: Solve for x
    x = 22,285,865,523,078,144/72,087,354
  6. Step 6: Final answer
    x = 309,150,832.79

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.