Finding the Fourth Proportional to 129,941.28, 194,989.68 and 119,365.92
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Solution
The fourth proportional to 129,941.28, 194,989.68 and 119,365.92 is: 179,120.31
Step by Step Solution
- Step 1: Write the proportion equation
129,941.28 : 194,989.68 = 119,365.92 : x - Step 2: Convert to fraction form
129,941.28/194,989.68 = 119,365.92/x - Step 3: Cross multiply
129,941.28x = 194,989.68 × 119,365.92 - Step 4: Simplify right side
129,941.28x = 23,275,122,543.71 - Step 5: Solve for x
x = 23,275,122,543.71/129,941.28 - Step 6: Final answer
x = 179,120.31
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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.