Finding the Fourth Proportional to 203,638.08, 305,558.92 and 91,398.54
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Solution
The fourth proportional to 203,638.08, 305,558.92 and 91,398.54 is: 137,143.50
Step by Step Solution
- Step 1: Write the proportion equation
203,638.08 : 305,558.92 = 91,398.54 : x - Step 2: Convert to fraction form
203,638.08/305,558.92 = 91,398.54/x - Step 3: Cross multiply
203,638.08x = 305,558.92 × 91,398.54 - Step 4: Simplify right side
203,638.08x = 27,927,639,171.98 - Step 5: Solve for x
x = 27,927,639,171.98/203,638.08 - Step 6: Final answer
x = 137,143.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.