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Finding the Third Proportional to 137,991 and 207,670.50

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Solution

The third proportional to 137,991 and 207,670.50 is: 312,535.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,991 : 207,670.50 = 207,670.50 : x
  2. Step 2: Convert to fraction form
    137,991/207,670.50 = 207,670.50/x
  3. Step 3: Cross multiply
    137,991x = 207,670.50 × 207,670.50
  4. Step 4: Simplify right side
    137,991x = 43,127,036,570.25
  5. Step 5: Solve for x
    x = 43,127,036,570.25/137,991
  6. Step 6: Final answer
    x = 312,535.14

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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.