Finding the Fourth Proportional to 154,957,869.98, 213,851,531.94 and 85,343,232.42
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Solution
The fourth proportional to 154,957,869.98, 213,851,531.94 and 85,343,232.42 is: 117,778,987.26
Step by Step Solution
- Step 1: Write the proportion equation
154,957,869.98 : 213,851,531.94 = 85,343,232.42 : x - Step 2: Convert to fraction form
154,957,869.98/213,851,531.94 = 85,343,232.42/x - Step 3: Cross multiply
154,957,869.98x = 213,851,531.94 × 85,343,232.42 - Step 4: Simplify right side
154,957,869.98x = 18,250,780,993,728,472 - Step 5: Solve for x
x = 18,250,780,993,728,472/154,957,869.98 - Step 6: Final answer
x = 117,778,987.26
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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.