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Finding the Third Proportional to 125,178 and 196,719

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Solution

The third proportional to 125,178 and 196,719 is: 309,146.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,178 : 196,719 = 196,719 : x
  2. Step 2: Convert to fraction form
    125,178/196,719 = 196,719/x
  3. Step 3: Cross multiply
    125,178x = 196,719 × 196,719
  4. Step 4: Simplify right side
    125,178x = 38,698,364,961
  5. Step 5: Solve for x
    x = 38,698,364,961/125,178
  6. Step 6: Final answer
    x = 309,146.69

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.