Finding the Fourth Proportional to 154,628.23, 231,651.35 and 121,246.91
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Solution
The fourth proportional to 154,628.23, 231,651.35 and 121,246.91 is: 181,642.20
Step by Step Solution
- Step 1: Write the proportion equation
154,628.23 : 231,651.35 = 121,246.91 : x - Step 2: Convert to fraction form
154,628.23/231,651.35 = 121,246.91/x - Step 3: Cross multiply
154,628.23x = 231,651.35 × 121,246.91 - Step 4: Simplify right side
154,628.23x = 28,087,010,812.40 - Step 5: Solve for x
x = 28,087,010,812.40/154,628.23 - Step 6: Final answer
x = 181,642.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.