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Finding the Third Proportional to 74,080 and 105,859

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Solution

The third proportional to 74,080 and 105,859 is: 151,270.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,080 : 105,859 = 105,859 : x
  2. Step 2: Convert to fraction form
    74,080/105,859 = 105,859/x
  3. Step 3: Cross multiply
    74,080x = 105,859 × 105,859
  4. Step 4: Simplify right side
    74,080x = 11,206,127,881
  5. Step 5: Solve for x
    x = 11,206,127,881/74,080
  6. Step 6: Final answer
    x = 151,270.62

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.