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Finding the Third Proportional to 139,335.19 and 213,500.81

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Solution

The third proportional to 139,335.19 and 213,500.81 is: 327,143.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,335.19 : 213,500.81 = 213,500.81 : x
  2. Step 2: Convert to fraction form
    139,335.19/213,500.81 = 213,500.81/x
  3. Step 3: Cross multiply
    139,335.19x = 213,500.81 × 213,500.81
  4. Step 4: Simplify right side
    139,335.19x = 45,582,596,938.16
  5. Step 5: Solve for x
    x = 45,582,596,938.16/139,335.19
  6. Step 6: Final answer
    x = 327,143.47

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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.