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Finding the Third Proportional to 86,053.50 and 129,039.75

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Solution

The third proportional to 86,053.50 and 129,039.75 is: 193,498.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,053.50 : 129,039.75 = 129,039.75 : x
  2. Step 2: Convert to fraction form
    86,053.50/129,039.75 = 129,039.75/x
  3. Step 3: Cross multiply
    86,053.50x = 129,039.75 × 129,039.75
  4. Step 4: Simplify right side
    86,053.50x = 16,651,257,080.06
  5. Step 5: Solve for x
    x = 16,651,257,080.06/86,053.50
  6. Step 6: Final answer
    x = 193,498.89

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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.