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Finding the Third Proportional to 100,574 and 147,909

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Solution

The third proportional to 100,574 and 147,909 is: 217,522.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,574 : 147,909 = 147,909 : x
  2. Step 2: Convert to fraction form
    100,574/147,909 = 147,909/x
  3. Step 3: Cross multiply
    100,574x = 147,909 × 147,909
  4. Step 4: Simplify right side
    100,574x = 21,877,072,281
  5. Step 5: Solve for x
    x = 21,877,072,281/100,574
  6. Step 6: Final answer
    x = 217,522.15

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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.