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Finding the Third Proportional to 64,589.50 and 138,521.75

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Solution

The third proportional to 64,589.50 and 138,521.75 is: 297,080.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,589.50 : 138,521.75 = 138,521.75 : x
  2. Step 2: Convert to fraction form
    64,589.50/138,521.75 = 138,521.75/x
  3. Step 3: Cross multiply
    64,589.50x = 138,521.75 × 138,521.75
  4. Step 4: Simplify right side
    64,589.50x = 19,188,275,223.06
  5. Step 5: Solve for x
    x = 19,188,275,223.06/64,589.50
  6. Step 6: Final answer
    x = 297,080.41

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.