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Finding the Third Proportional to 87,135 and 130,355

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Solution

The third proportional to 87,135 and 130,355 is: 195,012.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,135 : 130,355 = 130,355 : x
  2. Step 2: Convert to fraction form
    87,135/130,355 = 130,355/x
  3. Step 3: Cross multiply
    87,135x = 130,355 × 130,355
  4. Step 4: Simplify right side
    87,135x = 16,992,426,025
  5. Step 5: Solve for x
    x = 16,992,426,025/87,135
  6. Step 6: Final answer
    x = 195,012.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.