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Finding the Third Proportional to 80,421.75 and 118,292.25

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Solution

The third proportional to 80,421.75 and 118,292.25 is: 173,995.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,421.75 : 118,292.25 = 118,292.25 : x
  2. Step 2: Convert to fraction form
    80,421.75/118,292.25 = 118,292.25/x
  3. Step 3: Cross multiply
    80,421.75x = 118,292.25 × 118,292.25
  4. Step 4: Simplify right side
    80,421.75x = 13,993,056,410.06
  5. Step 5: Solve for x
    x = 13,993,056,410.06/80,421.75
  6. Step 6: Final answer
    x = 173,995.92

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.