Finding the Fourth Proportional to 128,397.96, 177,238.44 and 114,945.48
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Solution
The fourth proportional to 128,397.96, 177,238.44 and 114,945.48 is: 158,668.86
Step by Step Solution
- Step 1: Write the proportion equation
128,397.96 : 177,238.44 = 114,945.48 : x - Step 2: Convert to fraction form
128,397.96/177,238.44 = 114,945.48/x - Step 3: Cross multiply
128,397.96x = 177,238.44 × 114,945.48 - Step 4: Simplify right side
128,397.96x = 20,372,757,560.25 - Step 5: Solve for x
x = 20,372,757,560.25/128,397.96 - Step 6: Final answer
x = 158,668.86
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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.