Finding the Fourth Proportional to 221,680.09, 305,918.88 and 126,186.81
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Solution
The fourth proportional to 221,680.09, 305,918.88 and 126,186.81 is: 174,138.00
Step by Step Solution
- Step 1: Write the proportion equation
221,680.09 : 305,918.88 = 126,186.81 : x - Step 2: Convert to fraction form
221,680.09/305,918.88 = 126,186.81/x - Step 3: Cross multiply
221,680.09x = 305,918.88 × 126,186.81 - Step 4: Simplify right side
221,680.09x = 38,602,927,585.97 - Step 5: Solve for x
x = 38,602,927,585.97/221,680.09 - Step 6: Final answer
x = 174,138.00
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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.