Finding the Fourth Proportional to 154,651.36, 213,521.74 and 118,777.28
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Solution
The fourth proportional to 154,651.36, 213,521.74 and 118,777.28 is: 163,991.65
Step by Step Solution
- Step 1: Write the proportion equation
154,651.36 : 213,521.74 = 118,777.28 : x - Step 2: Convert to fraction form
154,651.36/213,521.74 = 118,777.28/x - Step 3: Cross multiply
154,651.36x = 213,521.74 × 118,777.28 - Step 4: Simplify right side
154,651.36x = 25,361,531,498.07 - Step 5: Solve for x
x = 25,361,531,498.07/154,651.36 - Step 6: Final answer
x = 163,991.65
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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.