Finding the Fourth Proportional to 128,879.06, 177,852.71 and 71,527.02
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Solution
The fourth proportional to 128,879.06, 177,852.71 and 71,527.02 is: 98,707.07
Step by Step Solution
- Step 1: Write the proportion equation
128,879.06 : 177,852.71 = 71,527.02 : x - Step 2: Convert to fraction form
128,879.06/177,852.71 = 71,527.02/x - Step 3: Cross multiply
128,879.06x = 177,852.71 × 71,527.02 - Step 4: Simplify right side
128,879.06x = 12,721,273,857.09 - Step 5: Solve for x
x = 12,721,273,857.09/128,879.06 - Step 6: Final answer
x = 98,707.07
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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.