Finding the Fourth Proportional to 199,888.02, 275,818.81 and 128,364.92
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Solution
The fourth proportional to 199,888.02, 275,818.81 and 128,364.92 is: 177,126.47
Step by Step Solution
- Step 1: Write the proportion equation
199,888.02 : 275,818.81 = 128,364.92 : x - Step 2: Convert to fraction form
199,888.02/275,818.81 = 128,364.92/x - Step 3: Cross multiply
199,888.02x = 275,818.81 × 128,364.92 - Step 4: Simplify right side
199,888.02x = 35,405,459,480.15 - Step 5: Solve for x
x = 35,405,459,480.15/199,888.02 - Step 6: Final answer
x = 177,126.47
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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.