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Finding the Third Proportional to 100,390 and 147,804

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Solution

The third proportional to 100,390 and 147,804 is: 217,611.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,390 : 147,804 = 147,804 : x
  2. Step 2: Convert to fraction form
    100,390/147,804 = 147,804/x
  3. Step 3: Cross multiply
    100,390x = 147,804 × 147,804
  4. Step 4: Simplify right side
    100,390x = 21,846,022,416
  5. Step 5: Solve for x
    x = 21,846,022,416/100,390
  6. Step 6: Final answer
    x = 217,611.54

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.