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Finding the Third Proportional to 66,154 and 99,243

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Solution

The third proportional to 66,154 and 99,243 is: 148,882.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,154 : 99,243 = 99,243 : x
  2. Step 2: Convert to fraction form
    66,154/99,243 = 99,243/x
  3. Step 3: Cross multiply
    66,154x = 99,243 × 99,243
  4. Step 4: Simplify right side
    66,154x = 9,849,173,049
  5. Step 5: Solve for x
    x = 9,849,173,049/66,154
  6. Step 6: Final answer
    x = 148,882.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.