Finding the Fourth Proportional to 157,645.15, 217,554.92 and 86,029.79
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Solution
The fourth proportional to 157,645.15, 217,554.92 and 86,029.79 is: 118,723.63
Step by Step Solution
- Step 1: Write the proportion equation
157,645.15 : 217,554.92 = 86,029.79 : x - Step 2: Convert to fraction form
157,645.15/217,554.92 = 86,029.79/x - Step 3: Cross multiply
157,645.15x = 217,554.92 × 86,029.79 - Step 4: Simplify right side
157,645.15x = 18,716,204,081.07 - Step 5: Solve for x
x = 18,716,204,081.07/157,645.15 - Step 6: Final answer
x = 118,723.63
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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.