Finding the Fourth Proportional to 221,690.92, 305,881.86 and 126,190.12
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Solution
The fourth proportional to 221,690.92, 305,881.86 and 126,190.12 is: 174,112.99
Step by Step Solution
- Step 1: Write the proportion equation
221,690.92 : 305,881.86 = 126,190.12 : x - Step 2: Convert to fraction form
221,690.92/305,881.86 = 126,190.12/x - Step 3: Cross multiply
221,690.92x = 305,881.86 × 126,190.12 - Step 4: Simplify right side
221,690.92x = 38,599,268,619.22 - Step 5: Solve for x
x = 38,599,268,619.22/221,690.92 - Step 6: Final answer
x = 174,112.99
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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.