Finding the Fourth Proportional to 151,578.24, 209,116.80 and 100,615.68
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Solution
The fourth proportional to 151,578.24, 209,116.80 and 100,615.68 is: 138,809.03
Step by Step Solution
- Step 1: Write the proportion equation
151,578.24 : 209,116.80 = 100,615.68 : x - Step 2: Convert to fraction form
151,578.24/209,116.80 = 100,615.68/x - Step 3: Cross multiply
151,578.24x = 209,116.80 × 100,615.68 - Step 4: Simplify right side
151,578.24x = 21,040,429,031.42 - Step 5: Solve for x
x = 21,040,429,031.42/151,578.24 - Step 6: Final answer
x = 138,809.03
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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.