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Finding the Third Proportional to 77,748 and 122,228

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Solution

The third proportional to 77,748 and 122,228 is: 192,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,748 : 122,228 = 122,228 : x
  2. Step 2: Convert to fraction form
    77,748/122,228 = 122,228/x
  3. Step 3: Cross multiply
    77,748x = 122,228 × 122,228
  4. Step 4: Simplify right side
    77,748x = 14,939,683,984
  5. Step 5: Solve for x
    x = 14,939,683,984/77,748
  6. Step 6: Final answer
    x = 192,155.22

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.