Finding the Fourth Proportional to 151,689.18, 209,330.91 and 83,706.14
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Solution
The fourth proportional to 151,689.18, 209,330.91 and 83,706.14 is: 115,514.38
Step by Step Solution
- Step 1: Write the proportion equation
151,689.18 : 209,330.91 = 83,706.14 : x - Step 2: Convert to fraction form
151,689.18/209,330.91 = 83,706.14/x - Step 3: Cross multiply
151,689.18x = 209,330.91 × 83,706.14 - Step 4: Simplify right side
151,689.18x = 17,522,281,412.13 - Step 5: Solve for x
x = 17,522,281,412.13/151,689.18 - Step 6: Final answer
x = 115,514.38
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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.