Finding the Fourth Proportional to 128,277.36, 177,072.14 and 114,824.88
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Solution
The fourth proportional to 128,277.36, 177,072.14 and 114,824.88 is: 158,502.54
Step by Step Solution
- Step 1: Write the proportion equation
128,277.36 : 177,072.14 = 114,824.88 : x - Step 2: Convert to fraction form
128,277.36/177,072.14 = 114,824.88/x - Step 3: Cross multiply
128,277.36x = 177,072.14 × 114,824.88 - Step 4: Simplify right side
128,277.36x = 20,332,287,513.91 - Step 5: Solve for x
x = 20,332,287,513.91/128,277.36 - Step 6: Final answer
x = 158,502.54
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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.