Finding the Fourth Proportional to 154,912.07, 213,758.19 and 86,926.43
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Solution
The fourth proportional to 154,912.07, 213,758.19 and 86,926.43 is: 119,946.99
Step by Step Solution
- Step 1: Write the proportion equation
154,912.07 : 213,758.19 = 86,926.43 : x - Step 2: Convert to fraction form
154,912.07/213,758.19 = 86,926.43/x - Step 3: Cross multiply
154,912.07x = 213,758.19 × 86,926.43 - Step 4: Simplify right side
154,912.07x = 18,581,235,271.17 - Step 5: Solve for x
x = 18,581,235,271.17/154,912.07 - Step 6: Final answer
x = 119,946.99
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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.