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Finding the Third Proportional to 84,104 and 128,618

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Solution

The third proportional to 84,104 and 128,618 is: 196,692.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,104 : 128,618 = 128,618 : x
  2. Step 2: Convert to fraction form
    84,104/128,618 = 128,618/x
  3. Step 3: Cross multiply
    84,104x = 128,618 × 128,618
  4. Step 4: Simplify right side
    84,104x = 16,542,589,924
  5. Step 5: Solve for x
    x = 16,542,589,924/84,104
  6. Step 6: Final answer
    x = 196,692.07

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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.