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Finding the Third Proportional to 84,421.50 and 133,679.25

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Solution

The third proportional to 84,421.50 and 133,679.25 is: 211,677.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,421.50 : 133,679.25 = 133,679.25 : x
  2. Step 2: Convert to fraction form
    84,421.50/133,679.25 = 133,679.25/x
  3. Step 3: Cross multiply
    84,421.50x = 133,679.25 × 133,679.25
  4. Step 4: Simplify right side
    84,421.50x = 17,870,141,880.56
  5. Step 5: Solve for x
    x = 17,870,141,880.56/84,421.50
  6. Step 6: Final answer
    x = 211,677.62

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.