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Finding the Third Proportional to 70,590 and 100,350

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Solution

The third proportional to 70,590 and 100,350 is: 142,656.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,590 : 100,350 = 100,350 : x
  2. Step 2: Convert to fraction form
    70,590/100,350 = 100,350/x
  3. Step 3: Cross multiply
    70,590x = 100,350 × 100,350
  4. Step 4: Simplify right side
    70,590x = 10,070,122,500
  5. Step 5: Solve for x
    x = 10,070,122,500/70,590
  6. Step 6: Final answer
    x = 142,656.50

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.