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Finding the Third Proportional to 66,340 and 100,470

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Solution

The third proportional to 66,340 and 100,470 is: 152,158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,340 : 100,470 = 100,470 : x
  2. Step 2: Convert to fraction form
    66,340/100,470 = 100,470/x
  3. Step 3: Cross multiply
    66,340x = 100,470 × 100,470
  4. Step 4: Simplify right side
    66,340x = 10,094,220,900
  5. Step 5: Solve for x
    x = 10,094,220,900/66,340
  6. Step 6: Final answer
    x = 152,158.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.