Finding the Fourth Proportional to 128,243.99, 177,026.09 and 114,791.51
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Solution
The fourth proportional to 128,243.99, 177,026.09 and 114,791.51 is: 158,456.48
Step by Step Solution
- Step 1: Write the proportion equation
128,243.99 : 177,026.09 = 114,791.51 : x - Step 2: Convert to fraction form
128,243.99/177,026.09 = 114,791.51/x - Step 3: Cross multiply
128,243.99x = 177,026.09 × 114,791.51 - Step 4: Simplify right side
128,243.99x = 20,321,090,721.41 - Step 5: Solve for x
x = 20,321,090,721.41/128,243.99 - Step 6: Final answer
x = 158,456.48
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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.