Finding the Fourth Proportional to 138,149.07, 190,637.92 and 77,722.26
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Solution
The fourth proportional to 138,149.07, 190,637.92 and 77,722.26 is: 107,252.33
Step by Step Solution
- Step 1: Write the proportion equation
138,149.07 : 190,637.92 = 77,722.26 : x - Step 2: Convert to fraction form
138,149.07/190,637.92 = 77,722.26/x - Step 3: Cross multiply
138,149.07x = 190,637.92 × 77,722.26 - Step 4: Simplify right side
138,149.07x = 14,816,809,984.10 - Step 5: Solve for x
x = 14,816,809,984.10/138,149.07 - Step 6: Final answer
x = 107,252.33
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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.