Finding the Fourth Proportional to 163,467.81, 225,686.21 and 129,613.05
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Solution
The fourth proportional to 163,467.81, 225,686.21 and 129,613.05 is: 178,945.80
Step by Step Solution
- Step 1: Write the proportion equation
163,467.81 : 225,686.21 = 129,613.05 : x - Step 2: Convert to fraction form
163,467.81/225,686.21 = 129,613.05/x - Step 3: Cross multiply
163,467.81x = 225,686.21 × 129,613.05 - Step 4: Simplify right side
163,467.81x = 29,251,877,372.98 - Step 5: Solve for x
x = 29,251,877,372.98/163,467.81 - Step 6: Final answer
x = 178,945.80
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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.