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Finding the Third Proportional to 100,128 and 147,168

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Solution

The third proportional to 100,128 and 147,168 is: 216,307.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,128 : 147,168 = 147,168 : x
  2. Step 2: Convert to fraction form
    100,128/147,168 = 147,168/x
  3. Step 3: Cross multiply
    100,128x = 147,168 × 147,168
  4. Step 4: Simplify right side
    100,128x = 21,658,420,224
  5. Step 5: Solve for x
    x = 21,658,420,224/100,128
  6. Step 6: Final answer
    x = 216,307.33

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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.