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Finding the Third Proportional to 74,134,505 and 154,405,078

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Solution

The third proportional to 74,134,505 and 154,405,078 is: 321,590,170.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,134,505 : 154,405,078 = 154,405,078 : x
  2. Step 2: Convert to fraction form
    74,134,505/154,405,078 = 154,405,078/x
  3. Step 3: Cross multiply
    74,134,505x = 154,405,078 × 154,405,078
  4. Step 4: Simplify right side
    74,134,505x = 23,840,928,112,186,084
  5. Step 5: Solve for x
    x = 23,840,928,112,186,084/74,134,505
  6. Step 6: Final answer
    x = 321,590,170.63

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.