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Finding the Third Proportional to 66,492 and 145,700

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Solution

The third proportional to 66,492 and 145,700 is: 319,263.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,492 : 145,700 = 145,700 : x
  2. Step 2: Convert to fraction form
    66,492/145,700 = 145,700/x
  3. Step 3: Cross multiply
    66,492x = 145,700 × 145,700
  4. Step 4: Simplify right side
    66,492x = 21,228,490,000
  5. Step 5: Solve for x
    x = 21,228,490,000/66,492
  6. Step 6: Final answer
    x = 319,263.82

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.