Finding the Fourth Proportional to 128,243.28, 177,025.08 and 114,790.80
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Solution
The fourth proportional to 128,243.28, 177,025.08 and 114,790.80 is: 158,455.48
Step by Step Solution
- Step 1: Write the proportion equation
128,243.28 : 177,025.08 = 114,790.80 : x - Step 2: Convert to fraction form
128,243.28/177,025.08 = 114,790.80/x - Step 3: Cross multiply
128,243.28x = 177,025.08 × 114,790.80 - Step 4: Simplify right side
128,243.28x = 20,320,850,553.26 - Step 5: Solve for x
x = 20,320,850,553.26/128,243.28 - Step 6: Final answer
x = 158,455.48
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1.5x scale
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.