Finding the Fourth Proportional to 138,133.97, 190,732.16 and 107,866.79
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Solution
The fourth proportional to 138,133.97, 190,732.16 and 107,866.79 is: 148,939.94
Step by Step Solution
- Step 1: Write the proportion equation
138,133.97 : 190,732.16 = 107,866.79 : x - Step 2: Convert to fraction form
138,133.97/190,732.16 = 107,866.79/x - Step 3: Cross multiply
138,133.97x = 190,732.16 × 107,866.79 - Step 4: Simplify right side
138,133.97x = 20,573,665,309.63 - Step 5: Solve for x
x = 20,573,665,309.63/138,133.97 - Step 6: Final answer
x = 148,939.94
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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.