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Finding the Third Proportional to 72,726,236 and 156,989,172

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Solution

The third proportional to 72,726,236 and 156,989,172 is: 338,881,832.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,726,236 : 156,989,172 = 156,989,172 : x
  2. Step 2: Convert to fraction form
    72,726,236/156,989,172 = 156,989,172/x
  3. Step 3: Cross multiply
    72,726,236x = 156,989,172 × 156,989,172
  4. Step 4: Simplify right side
    72,726,236x = 24,645,600,125,245,584
  5. Step 5: Solve for x
    x = 24,645,600,125,245,584/72,726,236
  6. Step 6: Final answer
    x = 338,881,832.48

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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.