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Finding the Third Proportional to 89,302.50 and 138,153

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Solution

The third proportional to 89,302.50 and 138,153 is: 213,725.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,302.50 : 138,153 = 138,153 : x
  2. Step 2: Convert to fraction form
    89,302.50/138,153 = 138,153/x
  3. Step 3: Cross multiply
    89,302.50x = 138,153 × 138,153
  4. Step 4: Simplify right side
    89,302.50x = 19,086,251,409
  5. Step 5: Solve for x
    x = 19,086,251,409/89,302.50
  6. Step 6: Final answer
    x = 213,725.84

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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.