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Finding the Third Proportional to 86,217 and 129,427.50

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Solution

The third proportional to 86,217 and 129,427.50 is: 194,294.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,217 : 129,427.50 = 129,427.50 : x
  2. Step 2: Convert to fraction form
    86,217/129,427.50 = 129,427.50/x
  3. Step 3: Cross multiply
    86,217x = 129,427.50 × 129,427.50
  4. Step 4: Simplify right side
    86,217x = 16,751,477,756.25
  5. Step 5: Solve for x
    x = 16,751,477,756.25/86,217
  6. Step 6: Final answer
    x = 194,294.37

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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.