Finding the Fourth Proportional to 158,357.36, 218,405.76 and 122,643.92
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Solution
The fourth proportional to 158,357.36, 218,405.76 and 122,643.92 is: 169,149.94
Step by Step Solution
- Step 1: Write the proportion equation
158,357.36 : 218,405.76 = 122,643.92 : x - Step 2: Convert to fraction form
158,357.36/218,405.76 = 122,643.92/x - Step 3: Cross multiply
158,357.36x = 218,405.76 × 122,643.92 - Step 4: Simplify right side
158,357.36x = 26,786,138,556.98 - Step 5: Solve for x
x = 26,786,138,556.98/158,357.36 - Step 6: Final answer
x = 169,149.94
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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.