Finding the Fourth Proportional to 199,891.28, 275,823.32 and 128,368.19
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Solution
The fourth proportional to 199,891.28, 275,823.32 and 128,368.19 is: 177,130.98
Step by Step Solution
- Step 1: Write the proportion equation
199,891.28 : 275,823.32 = 128,368.19 : x - Step 2: Convert to fraction form
199,891.28/275,823.32 = 128,368.19/x - Step 3: Cross multiply
199,891.28x = 275,823.32 × 128,368.19 - Step 4: Simplify right side
199,891.28x = 35,406,938,327.23 - Step 5: Solve for x
x = 35,406,938,327.23/199,891.28 - Step 6: Final answer
x = 177,130.98
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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.