Finding the Fourth Proportional to 207,847.36, 311,646.06 and 81,336.70
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Solution
The fourth proportional to 207,847.36, 311,646.06 and 81,336.70 is: 121,956.14
Step by Step Solution
- Step 1: Write the proportion equation
207,847.36 : 311,646.06 = 81,336.70 : x - Step 2: Convert to fraction form
207,847.36/311,646.06 = 81,336.70/x - Step 3: Cross multiply
207,847.36x = 311,646.06 × 81,336.70 - Step 4: Simplify right side
207,847.36x = 25,348,262,088.40 - Step 5: Solve for x
x = 25,348,262,088.40/207,847.36 - Step 6: Final answer
x = 121,956.14
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.