Finding the Fourth Proportional to 210,788.62, 316,183.47 and 86,129.62
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Solution
The fourth proportional to 210,788.62, 316,183.47 and 86,129.62 is: 129,194.65
Step by Step Solution
- Step 1: Write the proportion equation
210,788.62 : 316,183.47 = 86,129.62 : x - Step 2: Convert to fraction form
210,788.62/316,183.47 = 86,129.62/x - Step 3: Cross multiply
210,788.62x = 316,183.47 × 86,129.62 - Step 4: Simplify right side
210,788.62x = 27,232,762,121.38 - Step 5: Solve for x
x = 27,232,762,121.38/210,788.62 - Step 6: Final answer
x = 129,194.65
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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.