Finding the Fourth Proportional to 203,669.10, 305,380.94 and 91,328.99
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Solution
The fourth proportional to 203,669.10, 305,380.94 and 91,328.99 is: 136,938.45
Step by Step Solution
- Step 1: Write the proportion equation
203,669.10 : 305,380.94 = 91,328.99 : x - Step 2: Convert to fraction form
203,669.10/305,380.94 = 91,328.99/x - Step 3: Cross multiply
203,669.10x = 305,380.94 × 91,328.99 - Step 4: Simplify right side
203,669.10x = 27,890,130,831.90 - Step 5: Solve for x
x = 27,890,130,831.90/203,669.10 - Step 6: Final answer
x = 136,938.45
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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.