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Finding the Third Proportional to 78,833.25 and 121,176

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Solution

The third proportional to 78,833.25 and 121,176 is: 186,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,833.25 : 121,176 = 121,176 : x
  2. Step 2: Convert to fraction form
    78,833.25/121,176 = 121,176/x
  3. Step 3: Cross multiply
    78,833.25x = 121,176 × 121,176
  4. Step 4: Simplify right side
    78,833.25x = 14,683,622,976
  5. Step 5: Solve for x
    x = 14,683,622,976/78,833.25
  6. Step 6: Final answer
    x = 186,261.80

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.