Finding the Fourth Proportional to 199,913.23, 275,853.63 and 128,390.14
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Solution
The fourth proportional to 199,913.23, 275,853.63 and 128,390.14 is: 177,161.29
Step by Step Solution
- Step 1: Write the proportion equation
199,913.23 : 275,853.63 = 128,390.14 : x - Step 2: Convert to fraction form
199,913.23/275,853.63 = 128,390.14/x - Step 3: Cross multiply
199,913.23x = 275,853.63 × 128,390.14 - Step 4: Simplify right side
199,913.23x = 35,416,886,175.21 - Step 5: Solve for x
x = 35,416,886,175.21/199,913.23 - Step 6: Final answer
x = 177,161.29
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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.