Finding the Fourth Proportional to 151,990.66, 209,638.33 and 106,678.75
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Solution
The fourth proportional to 151,990.66, 209,638.33 and 106,678.75 is: 147,140.32
Step by Step Solution
- Step 1: Write the proportion equation
151,990.66 : 209,638.33 = 106,678.75 : x - Step 2: Convert to fraction form
151,990.66/209,638.33 = 106,678.75/x - Step 3: Cross multiply
151,990.66x = 209,638.33 × 106,678.75 - Step 4: Simplify right side
151,990.66x = 22,363,954,996.49 - Step 5: Solve for x
x = 22,363,954,996.49/151,990.66 - Step 6: Final answer
x = 147,140.32
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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.