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Finding the Third Proportional to 79,718 and 169,154

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Solution

The third proportional to 79,718 and 169,154 is: 358,928.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,718 : 169,154 = 169,154 : x
  2. Step 2: Convert to fraction form
    79,718/169,154 = 169,154/x
  3. Step 3: Cross multiply
    79,718x = 169,154 × 169,154
  4. Step 4: Simplify right side
    79,718x = 28,613,075,716
  5. Step 5: Solve for x
    x = 28,613,075,716/79,718
  6. Step 6: Final answer
    x = 358,928.67

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.