Finding the Fourth Proportional to 137,891.40, 206,885.70 and 133,031.40
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Solution
The fourth proportional to 137,891.40, 206,885.70 and 133,031.40 is: 199,593.99
Step by Step Solution
- Step 1: Write the proportion equation
137,891.40 : 206,885.70 = 133,031.40 : x - Step 2: Convert to fraction form
137,891.40/206,885.70 = 133,031.40/x - Step 3: Cross multiply
137,891.40x = 206,885.70 × 133,031.40 - Step 4: Simplify right side
137,891.40x = 27,522,294,310.98 - Step 5: Solve for x
x = 27,522,294,310.98/137,891.40 - Step 6: Final answer
x = 199,593.99
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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.