Finding the Fourth Proportional to 198,489.61, 273,918.16 and 107,847.09
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Solution
The fourth proportional to 198,489.61, 273,918.16 and 107,847.09 is: 148,830.34
Step by Step Solution
- Step 1: Write the proportion equation
198,489.61 : 273,918.16 = 107,847.09 : x - Step 2: Convert to fraction form
198,489.61/273,918.16 = 107,847.09/x - Step 3: Cross multiply
198,489.61x = 273,918.16 × 107,847.09 - Step 4: Simplify right side
198,489.61x = 29,541,276,945.32 - Step 5: Solve for x
x = 29,541,276,945.32/198,489.61 - Step 6: Final answer
x = 148,830.34
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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.