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Finding the Third Proportional to 117,858.50 and 178,499.75

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Solution

The third proportional to 117,858.50 and 178,499.75 is: 270,342.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,858.50 : 178,499.75 = 178,499.75 : x
  2. Step 2: Convert to fraction form
    117,858.50/178,499.75 = 178,499.75/x
  3. Step 3: Cross multiply
    117,858.50x = 178,499.75 × 178,499.75
  4. Step 4: Simplify right side
    117,858.50x = 31,862,160,750.06
  5. Step 5: Solve for x
    x = 31,862,160,750.06/117,858.50
  6. Step 6: Final answer
    x = 270,342.49

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.