Finding the Fourth Proportional to 207,811.36, 311,730.17 and 87,845.95
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Solution
The fourth proportional to 207,811.36, 311,730.17 and 87,845.95 is: 131,774.48
Step by Step Solution
- Step 1: Write the proportion equation
207,811.36 : 311,730.17 = 87,845.95 : x - Step 2: Convert to fraction form
207,811.36/311,730.17 = 87,845.95/x - Step 3: Cross multiply
207,811.36x = 311,730.17 × 87,845.95 - Step 4: Simplify right side
207,811.36x = 27,384,232,568.59 - Step 5: Solve for x
x = 27,384,232,568.59/207,811.36 - Step 6: Final answer
x = 131,774.48
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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.