Finding the Fourth Proportional to 209,516.91, 289,095.12 and 136,900.62
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Solution
The fourth proportional to 209,516.91, 289,095.12 and 136,900.62 is: 188,897.88
Step by Step Solution
- Step 1: Write the proportion equation
209,516.91 : 289,095.12 = 136,900.62 : x - Step 2: Convert to fraction form
209,516.91/289,095.12 = 136,900.62/x - Step 3: Cross multiply
209,516.91x = 289,095.12 × 136,900.62 - Step 4: Simplify right side
209,516.91x = 39,577,301,166.97 - Step 5: Solve for x
x = 39,577,301,166.97/209,516.91 - Step 6: Final answer
x = 188,897.88
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1.5x scale
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.