Finding the Fourth Proportional to 154,578.78, 213,306.48 and 86,590.44
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Solution
The fourth proportional to 154,578.78, 213,306.48 and 86,590.44 is: 119,487.95
Step by Step Solution
- Step 1: Write the proportion equation
154,578.78 : 213,306.48 = 86,590.44 : x - Step 2: Convert to fraction form
154,578.78/213,306.48 = 86,590.44/x - Step 3: Cross multiply
154,578.78x = 213,306.48 × 86,590.44 - Step 4: Simplify right side
154,578.78x = 18,470,301,958.05 - Step 5: Solve for x
x = 18,470,301,958.05/154,578.78 - Step 6: Final answer
x = 119,487.95
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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.