Finding the Fourth Proportional to 122,489.80, 183,734.70 and 102,806.80
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Solution
The fourth proportional to 122,489.80, 183,734.70 and 102,806.80 is: 154,210.20
Step by Step Solution
- Step 1: Write the proportion equation
122,489.80 : 183,734.70 = 102,806.80 : x - Step 2: Convert to fraction form
122,489.80/183,734.70 = 102,806.80/x - Step 3: Cross multiply
122,489.80x = 183,734.70 × 102,806.80 - Step 4: Simplify right side
122,489.80x = 18,889,176,555.96 - Step 5: Solve for x
x = 18,889,176,555.96/122,489.80 - Step 6: Final answer
x = 154,210.20
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1.5x scale
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.