Finding the Fourth Proportional to 161,640.09, 242,489.55 and 66,818.78
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Solution
The fourth proportional to 161,640.09, 242,489.55 and 66,818.78 is: 100,240.32
Step by Step Solution
- Step 1: Write the proportion equation
161,640.09 : 242,489.55 = 66,818.78 : x - Step 2: Convert to fraction form
161,640.09/242,489.55 = 66,818.78/x - Step 3: Cross multiply
161,640.09x = 242,489.55 × 66,818.78 - Step 4: Simplify right side
161,640.09x = 16,202,854,347.21 - Step 5: Solve for x
x = 16,202,854,347.21/161,640.09 - Step 6: Final answer
x = 100,240.32
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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.