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Finding the Third Proportional to 60,486 and 128,748

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Solution

The third proportional to 60,486 and 128,748 is: 274,047.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,486 : 128,748 = 128,748 : x
  2. Step 2: Convert to fraction form
    60,486/128,748 = 128,748/x
  3. Step 3: Cross multiply
    60,486x = 128,748 × 128,748
  4. Step 4: Simplify right side
    60,486x = 16,576,047,504
  5. Step 5: Solve for x
    x = 16,576,047,504/60,486
  6. Step 6: Final answer
    x = 274,047.67

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.