Finding the Fourth Proportional to 149,957.91, 206,941.97 and 81,975.19
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Solution
The fourth proportional to 149,957.91, 206,941.97 and 81,975.19 is: 113,125.79
Step by Step Solution
- Step 1: Write the proportion equation
149,957.91 : 206,941.97 = 81,975.19 : x - Step 2: Convert to fraction form
149,957.91/206,941.97 = 81,975.19/x - Step 3: Cross multiply
149,957.91x = 206,941.97 × 81,975.19 - Step 4: Simplify right side
149,957.91x = 16,964,107,309.72 - Step 5: Solve for x
x = 16,964,107,309.72/149,957.91 - Step 6: Final answer
x = 113,125.79
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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.