Finding the Fourth Proportional to 157,907.27, 217,909.41 and 86,285.75
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Solution
The fourth proportional to 157,907.27, 217,909.41 and 86,285.75 is: 119,072.90
Step by Step Solution
- Step 1: Write the proportion equation
157,907.27 : 217,909.41 = 86,285.75 : x - Step 2: Convert to fraction form
157,907.27/217,909.41 = 86,285.75/x - Step 3: Cross multiply
157,907.27x = 217,909.41 × 86,285.75 - Step 4: Simplify right side
157,907.27x = 18,802,476,873.91 - Step 5: Solve for x
x = 18,802,476,873.91/157,907.27 - Step 6: Final answer
x = 119,072.90
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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.