Finding the Fourth Proportional to 137,291.73, 189,478.49 and 83,608.17
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Solution
The fourth proportional to 137,291.73, 189,478.49 and 83,608.17 is: 115,388.96
Step by Step Solution
- Step 1: Write the proportion equation
137,291.73 : 189,478.49 = 83,608.17 : x - Step 2: Convert to fraction form
137,291.73/189,478.49 = 83,608.17/x - Step 3: Cross multiply
137,291.73x = 189,478.49 × 83,608.17 - Step 4: Simplify right side
137,291.73x = 15,841,949,385.22 - Step 5: Solve for x
x = 15,841,949,385.22/137,291.73 - Step 6: Final answer
x = 115,388.96
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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.