Finding the Fourth Proportional to 157,858.34, 217,859.52 and 86,249.12
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Solution
The fourth proportional to 157,858.34, 217,859.52 and 86,249.12 is: 119,031.99
Step by Step Solution
- Step 1: Write the proportion equation
157,858.34 : 217,859.52 = 86,249.12 : x - Step 2: Convert to fraction form
157,858.34/217,859.52 = 86,249.12/x - Step 3: Cross multiply
157,858.34x = 217,859.52 × 86,249.12 - Step 4: Simplify right side
157,858.34x = 18,790,191,883.62 - Step 5: Solve for x
x = 18,790,191,883.62/157,858.34 - Step 6: Final answer
x = 119,031.99
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1.5x scale
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.