Finding the Fourth Proportional to 207,129.60, 285,687.36 and 135,394.56
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Solution
The fourth proportional to 207,129.60, 285,687.36 and 135,394.56 is: 186,745.47
Step by Step Solution
- Step 1: Write the proportion equation
207,129.60 : 285,687.36 = 135,394.56 : x - Step 2: Convert to fraction form
207,129.60/285,687.36 = 135,394.56/x - Step 3: Cross multiply
207,129.60x = 285,687.36 × 135,394.56 - Step 4: Simplify right side
207,129.60x = 38,680,514,404.76 - Step 5: Solve for x
x = 38,680,514,404.76/207,129.60 - Step 6: Final answer
x = 186,745.47
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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.