Finding the Fourth Proportional to 121,631.28, 182,322.42 and 68,929.44
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Solution
The fourth proportional to 121,631.28, 182,322.42 and 68,929.44 is: 103,323.60
Step by Step Solution
- Step 1: Write the proportion equation
121,631.28 : 182,322.42 = 68,929.44 : x - Step 2: Convert to fraction form
121,631.28/182,322.42 = 68,929.44/x - Step 3: Cross multiply
121,631.28x = 182,322.42 × 68,929.44 - Step 4: Simplify right side
121,631.28x = 12,567,382,310.04 - Step 5: Solve for x
x = 12,567,382,310.04/121,631.28 - Step 6: Final answer
x = 103,323.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.