Finding the Fourth Proportional to 121,962.91, 182,839.21 and 47,135.56
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Solution
The fourth proportional to 121,962.91, 182,839.21 and 47,135.56 is: 70,662.70
Step by Step Solution
- Step 1: Write the proportion equation
121,962.91 : 182,839.21 = 47,135.56 : x - Step 2: Convert to fraction form
121,962.91/182,839.21 = 47,135.56/x - Step 3: Cross multiply
121,962.91x = 182,839.21 × 47,135.56 - Step 4: Simplify right side
121,962.91x = 8,618,228,553.31 - Step 5: Solve for x
x = 8,618,228,553.31/121,962.91 - Step 6: Final answer
x = 70,662.70
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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.