Finding the Fourth Proportional to 154,859.58, 213,685.76 and 86,873.95
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Solution
The fourth proportional to 154,859.58, 213,685.76 and 86,873.95 is: 119,874.56
Step by Step Solution
- Step 1: Write the proportion equation
154,859.58 : 213,685.76 = 86,873.95 : x - Step 2: Convert to fraction form
154,859.58/213,685.76 = 86,873.95/x - Step 3: Cross multiply
154,859.58x = 213,685.76 × 86,873.95 - Step 4: Simplify right side
154,859.58x = 18,563,724,527.15 - Step 5: Solve for x
x = 18,563,724,527.15/154,859.58 - Step 6: Final answer
x = 119,874.56
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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.