Finding the Fourth Proportional to 157,882.21, 217,874.91 and 86,260.70
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Solution
The fourth proportional to 157,882.21, 217,874.91 and 86,260.70 is: 119,038.38
Step by Step Solution
- Step 1: Write the proportion equation
157,882.21 : 217,874.91 = 86,260.70 : x - Step 2: Convert to fraction form
157,882.21/217,874.91 = 86,260.70/x - Step 3: Cross multiply
157,882.21x = 217,874.91 × 86,260.70 - Step 4: Simplify right side
157,882.21x = 18,794,042,249.04 - Step 5: Solve for x
x = 18,794,042,249.04/157,882.21 - Step 6: Final answer
x = 119,038.38
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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.