Finding the Fourth Proportional to 131,615.36, 181,628.66 and 71,186.08
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Solution
The fourth proportional to 131,615.36, 181,628.66 and 71,186.08 is: 98,236.50
Step by Step Solution
- Step 1: Write the proportion equation
131,615.36 : 181,628.66 = 71,186.08 : x - Step 2: Convert to fraction form
131,615.36/181,628.66 = 71,186.08/x - Step 3: Cross multiply
131,615.36x = 181,628.66 × 71,186.08 - Step 4: Simplify right side
131,615.36x = 12,929,432,321.05 - Step 5: Solve for x
x = 12,929,432,321.05/131,615.36 - Step 6: Final answer
x = 98,236.50
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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.