Finding the Fourth Proportional to 151,989.66, 209,636.95 and 106,677.75
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Solution
The fourth proportional to 151,989.66, 209,636.95 and 106,677.75 is: 147,138.94
Step by Step Solution
- Step 1: Write the proportion equation
151,989.66 : 209,636.95 = 106,677.75 : x - Step 2: Convert to fraction form
151,989.66/209,636.95 = 106,677.75/x - Step 3: Cross multiply
151,989.66x = 209,636.95 × 106,677.75 - Step 4: Simplify right side
151,989.66x = 22,363,597,876.17 - Step 5: Solve for x
x = 22,363,597,876.17/151,989.66 - Step 6: Final answer
x = 147,138.94
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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.