Finding the Fourth Proportional to 137,685.21, 206,335.57 and 74,368.82
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Solution
The fourth proportional to 137,685.21, 206,335.57 and 74,368.82 is: 111,449.39
Step by Step Solution
- Step 1: Write the proportion equation
137,685.21 : 206,335.57 = 74,368.82 : x - Step 2: Convert to fraction form
137,685.21/206,335.57 = 74,368.82/x - Step 3: Cross multiply
137,685.21x = 206,335.57 × 74,368.82 - Step 4: Simplify right side
137,685.21x = 15,344,932,864.93 - Step 5: Solve for x
x = 15,344,932,864.93/137,685.21 - Step 6: Final answer
x = 111,449.39
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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.