Finding the Fourth Proportional to 137,838.58, 206,839.12 and 57,890.58
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Solution
The fourth proportional to 137,838.58, 206,839.12 and 57,890.58 is: 86,869.99
Step by Step Solution
- Step 1: Write the proportion equation
137,838.58 : 206,839.12 = 57,890.58 : x - Step 2: Convert to fraction form
137,838.58/206,839.12 = 57,890.58/x - Step 3: Cross multiply
137,838.58x = 206,839.12 × 57,890.58 - Step 4: Simplify right side
137,838.58x = 11,974,036,623.49 - Step 5: Solve for x
x = 11,974,036,623.49/137,838.58 - Step 6: Final answer
x = 86,869.99
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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.