Finding the Fourth Proportional to 118,919.75, 164,109.26 and 68,618.75
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Solution
The fourth proportional to 118,919.75, 164,109.26 and 68,618.75 is: 94,693.88
Step by Step Solution
- Step 1: Write the proportion equation
118,919.75 : 164,109.26 = 68,618.75 : x - Step 2: Convert to fraction form
118,919.75/164,109.26 = 68,618.75/x - Step 3: Cross multiply
118,919.75x = 164,109.26 × 68,618.75 - Step 4: Simplify right side
118,919.75x = 11,260,972,284.63 - Step 5: Solve for x
x = 11,260,972,284.63/118,919.75 - Step 6: Final answer
x = 94,693.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.