Finding the Fourth Proportional to 154,120,419.62, 212,717,077.35 and 91,431,314.04
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Solution
The fourth proportional to 154,120,419.62, 212,717,077.35 and 91,431,314.04 is: 126,193,543.66
Step by Step Solution
- Step 1: Write the proportion equation
154,120,419.62 : 212,717,077.35 = 91,431,314.04 : x - Step 2: Convert to fraction form
154,120,419.62/212,717,077.35 = 91,431,314.04/x - Step 3: Cross multiply
154,120,419.62x = 212,717,077.35 × 91,431,314.04 - Step 4: Simplify right side
154,120,419.62x = 19,449,001,900,858,820 - Step 5: Solve for x
x = 19,449,001,900,858,820/154,120,419.62 - Step 6: Final answer
x = 126,193,543.66
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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.