Finding the Fourth Proportional to 138,637.26, 206,953.02 and 121,822.20
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Solution
The fourth proportional to 138,637.26, 206,953.02 and 121,822.20 is: 181,852.07
Step by Step Solution
- Step 1: Write the proportion equation
138,637.26 : 206,953.02 = 121,822.20 : x - Step 2: Convert to fraction form
138,637.26/206,953.02 = 121,822.20/x - Step 3: Cross multiply
138,637.26x = 206,953.02 × 121,822.20 - Step 4: Simplify right side
138,637.26x = 25,211,472,193.04 - Step 5: Solve for x
x = 25,211,472,193.04/138,637.26 - Step 6: Final answer
x = 181,852.07
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.