Finding the Fourth Proportional to 137,622.96, 189,838.98 and 86,554.62
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Solution
The fourth proportional to 137,622.96, 189,838.98 and 86,554.62 is: 119,394.62
Step by Step Solution
- Step 1: Write the proportion equation
137,622.96 : 189,838.98 = 86,554.62 : x - Step 2: Convert to fraction form
137,622.96/189,838.98 = 86,554.62/x - Step 3: Cross multiply
137,622.96x = 189,838.98 × 86,554.62 - Step 4: Simplify right side
137,622.96x = 16,431,440,775.09 - Step 5: Solve for x
x = 16,431,440,775.09/137,622.96 - Step 6: Final answer
x = 119,394.62
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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.