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Finding the Third Proportional to 70,428 and 146,679

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Solution

The third proportional to 70,428 and 146,679 is: 305,485.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,428 : 146,679 = 146,679 : x
  2. Step 2: Convert to fraction form
    70,428/146,679 = 146,679/x
  3. Step 3: Cross multiply
    70,428x = 146,679 × 146,679
  4. Step 4: Simplify right side
    70,428x = 21,514,729,041
  5. Step 5: Solve for x
    x = 21,514,729,041/70,428
  6. Step 6: Final answer
    x = 305,485.45

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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.