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Finding the Third Proportional to 74,478 and 159,618

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Solution

The third proportional to 74,478 and 159,618 is: 342,086.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,478 : 159,618 = 159,618 : x
  2. Step 2: Convert to fraction form
    74,478/159,618 = 159,618/x
  3. Step 3: Cross multiply
    74,478x = 159,618 × 159,618
  4. Step 4: Simplify right side
    74,478x = 25,477,905,924
  5. Step 5: Solve for x
    x = 25,477,905,924/74,478
  6. Step 6: Final answer
    x = 342,086.33

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.