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Finding the Third Proportional to 77,205 and 115,808

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Solution

The third proportional to 77,205 and 115,808 is: 173,712.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,205 : 115,808 = 115,808 : x
  2. Step 2: Convert to fraction form
    77,205/115,808 = 115,808/x
  3. Step 3: Cross multiply
    77,205x = 115,808 × 115,808
  4. Step 4: Simplify right side
    77,205x = 13,411,492,864
  5. Step 5: Solve for x
    x = 13,411,492,864/77,205
  6. Step 6: Final answer
    x = 173,712.75

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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.