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Finding the Third Proportional to 85,425 and 130,243

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Solution

The third proportional to 85,425 and 130,243 is: 198,574.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,425 : 130,243 = 130,243 : x
  2. Step 2: Convert to fraction form
    85,425/130,243 = 130,243/x
  3. Step 3: Cross multiply
    85,425x = 130,243 × 130,243
  4. Step 4: Simplify right side
    85,425x = 16,963,239,049
  5. Step 5: Solve for x
    x = 16,963,239,049/85,425
  6. Step 6: Final answer
    x = 198,574.64

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.