Finding the Fourth Proportional to 137,418.53, 205,891.07 and 107,421.09
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Solution
The fourth proportional to 137,418.53, 205,891.07 and 107,421.09 is: 160,946.58
Step by Step Solution
- Step 1: Write the proportion equation
137,418.53 : 205,891.07 = 107,421.09 : x - Step 2: Convert to fraction form
137,418.53/205,891.07 = 107,421.09/x - Step 3: Cross multiply
137,418.53x = 205,891.07 × 107,421.09 - Step 4: Simplify right side
137,418.53x = 22,117,041,851.47 - Step 5: Solve for x
x = 22,117,041,851.47/137,418.53 - Step 6: Final answer
x = 160,946.58
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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.