Finding the Fourth Proportional to 215,421.21, 297,236.16 and 124,771.68
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Solution
The fourth proportional to 215,421.21, 297,236.16 and 124,771.68 is: 172,158.79
Step by Step Solution
- Step 1: Write the proportion equation
215,421.21 : 297,236.16 = 124,771.68 : x - Step 2: Convert to fraction form
215,421.21/297,236.16 = 124,771.68/x - Step 3: Cross multiply
215,421.21x = 297,236.16 × 124,771.68 - Step 4: Simplify right side
215,421.21x = 37,086,655,039.95 - Step 5: Solve for x
x = 37,086,655,039.95/215,421.21 - Step 6: Final answer
x = 172,158.79
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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.