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Finding the Third Proportional to 87,148.50 and 122,719.50

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Solution

The third proportional to 87,148.50 and 122,719.50 is: 172,809.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,148.50 : 122,719.50 = 122,719.50 : x
  2. Step 2: Convert to fraction form
    87,148.50/122,719.50 = 122,719.50/x
  3. Step 3: Cross multiply
    87,148.50x = 122,719.50 × 122,719.50
  4. Step 4: Simplify right side
    87,148.50x = 15,060,075,680.25
  5. Step 5: Solve for x
    x = 15,060,075,680.25/87,148.50
  6. Step 6: Final answer
    x = 172,809.35

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.