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Finding the Third Proportional to 138,109.50 and 202,790.25

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Solution

The third proportional to 138,109.50 and 202,790.25 is: 297,762.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,109.50 : 202,790.25 = 202,790.25 : x
  2. Step 2: Convert to fraction form
    138,109.50/202,790.25 = 202,790.25/x
  3. Step 3: Cross multiply
    138,109.50x = 202,790.25 × 202,790.25
  4. Step 4: Simplify right side
    138,109.50x = 41,123,885,495.06
  5. Step 5: Solve for x
    x = 41,123,885,495.06/138,109.50
  6. Step 6: Final answer
    x = 297,762.90

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.