Finding the Fourth Proportional to 129,504,117.16, 178,716,157.67 and 70,766,791.12
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Solution
The fourth proportional to 129,504,117.16, 178,716,157.67 and 70,766,791.12 is: 97,658,431.84
Step by Step Solution
- Step 1: Write the proportion equation
129,504,117.16 : 178,716,157.67 = 70,766,791.12 : x - Step 2: Convert to fraction form
129,504,117.16/178,716,157.67 = 70,766,791.12/x - Step 3: Cross multiply
129,504,117.16x = 178,716,157.67 × 70,766,791.12 - Step 4: Simplify right side
129,504,117.16x = 12,647,168,998,354,460 - Step 5: Solve for x
x = 12,647,168,998,354,460/129,504,117.16 - Step 6: Final answer
x = 97,658,431.84
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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.