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Finding the Third Proportional to 129,478.50 and 206,114.63

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Solution

The third proportional to 129,478.50 and 206,114.63 is: 328,110.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,478.50 : 206,114.63 = 206,114.63 : x
  2. Step 2: Convert to fraction form
    129,478.50/206,114.63 = 206,114.63/x
  3. Step 3: Cross multiply
    129,478.50x = 206,114.63 × 206,114.63
  4. Step 4: Simplify right side
    129,478.50x = 42,483,238,638.89
  5. Step 5: Solve for x
    x = 42,483,238,638.89/129,478.50
  6. Step 6: Final answer
    x = 328,110.37

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.