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Finding the Third Proportional to 89,707.50 and 139,299.75

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Solution

The third proportional to 89,707.50 and 139,299.75 is: 216,307.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,707.50 : 139,299.75 = 139,299.75 : x
  2. Step 2: Convert to fraction form
    89,707.50/139,299.75 = 139,299.75/x
  3. Step 3: Cross multiply
    89,707.50x = 139,299.75 × 139,299.75
  4. Step 4: Simplify right side
    89,707.50x = 19,404,420,350.06
  5. Step 5: Solve for x
    x = 19,404,420,350.06/89,707.50
  6. Step 6: Final answer
    x = 216,307.67

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.