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Finding the Third Proportional to 139,839.75 and 213,823.13

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Solution

The third proportional to 139,839.75 and 213,823.13 is: 326,948.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,839.75 : 213,823.13 = 213,823.13 : x
  2. Step 2: Convert to fraction form
    139,839.75/213,823.13 = 213,823.13/x
  3. Step 3: Cross multiply
    139,839.75x = 213,823.13 × 213,823.13
  4. Step 4: Simplify right side
    139,839.75x = 45,720,328,784.77
  5. Step 5: Solve for x
    x = 45,720,328,784.77/139,839.75
  6. Step 6: Final answer
    x = 326,948.02

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.