Finding the Fourth Proportional to 154,186.22, 212,777.34 and 86,205.62
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Solution
The fourth proportional to 154,186.22, 212,777.34 and 86,205.62 is: 118,963.95
Step by Step Solution
- Step 1: Write the proportion equation
154,186.22 : 212,777.34 = 86,205.62 : x - Step 2: Convert to fraction form
154,186.22/212,777.34 = 86,205.62/x - Step 3: Cross multiply
154,186.22x = 212,777.34 × 86,205.62 - Step 4: Simplify right side
154,186.22x = 18,342,602,516.65 - Step 5: Solve for x
x = 18,342,602,516.65/154,186.22 - Step 6: Final answer
x = 118,963.95
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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.