Finding the Fourth Proportional to 138,182.30, 190,674.63 and 87,175.79
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Solution
The fourth proportional to 138,182.30, 190,674.63 and 87,175.79 is: 120,291.90
Step by Step Solution
- Step 1: Write the proportion equation
138,182.30 : 190,674.63 = 87,175.79 : x - Step 2: Convert to fraction form
138,182.30/190,674.63 = 87,175.79/x - Step 3: Cross multiply
138,182.30x = 190,674.63 × 87,175.79 - Step 4: Simplify right side
138,182.30x = 16,622,211,503.21 - Step 5: Solve for x
x = 16,622,211,503.21/138,182.30 - Step 6: Final answer
x = 120,291.90
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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.