Finding the Fourth Proportional to 212,626.66, 293,404.60 and 121,990.09
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Solution
The fourth proportional to 212,626.66, 293,404.60 and 121,990.09 is: 168,334.74
Step by Step Solution
- Step 1: Write the proportion equation
212,626.66 : 293,404.60 = 121,990.09 : x - Step 2: Convert to fraction form
212,626.66/293,404.60 = 121,990.09/x - Step 3: Cross multiply
212,626.66x = 293,404.60 × 121,990.09 - Step 4: Simplify right side
212,626.66x = 35,792,453,560.41 - Step 5: Solve for x
x = 35,792,453,560.41/212,626.66 - Step 6: Final answer
x = 168,334.74
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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.