Finding the Fourth Proportional to 212,625.91, 293,403.56 and 121,989.34
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Solution
The fourth proportional to 212,625.91, 293,403.56 and 121,989.34 is: 168,333.70
Step by Step Solution
- Step 1: Write the proportion equation
212,625.91 : 293,403.56 = 121,989.34 : x - Step 2: Convert to fraction form
212,625.91/293,403.56 = 121,989.34/x - Step 3: Cross multiply
212,625.91x = 293,403.56 × 121,989.34 - Step 4: Simplify right side
212,625.91x = 35,792,106,638.05 - Step 5: Solve for x
x = 35,792,106,638.05/212,625.91 - Step 6: Final answer
x = 168,333.70
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1.5x scale
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.