Finding the Fourth Proportional to 141,642,452.80, 212,463,679.20 and 84,105,107.20
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Solution
The fourth proportional to 141,642,452.80, 212,463,679.20 and 84,105,107.20 is: 126,157,660.80
Step by Step Solution
- Step 1: Write the proportion equation
141,642,452.80 : 212,463,679.20 = 84,105,107.20 : x - Step 2: Convert to fraction form
141,642,452.80/212,463,679.20 = 84,105,107.20/x - Step 3: Cross multiply
141,642,452.80x = 212,463,679.20 × 84,105,107.20 - Step 4: Simplify right side
141,642,452.80x = 17,869,280,515,222,410 - Step 5: Solve for x
x = 17,869,280,515,222,410/141,642,452.80 - Step 6: Final answer
x = 126,157,660.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.