Finding the Fourth Proportional to 157,853.97, 217,841.67 and 86,238.59
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Solution
The fourth proportional to 157,853.97, 217,841.67 and 86,238.59 is: 119,010.99
Step by Step Solution
- Step 1: Write the proportion equation
157,853.97 : 217,841.67 = 86,238.59 : x - Step 2: Convert to fraction form
157,853.97/217,841.67 = 86,238.59/x - Step 3: Cross multiply
157,853.97x = 217,841.67 × 86,238.59 - Step 4: Simplify right side
157,853.97x = 18,786,357,374.84 - Step 5: Solve for x
x = 18,786,357,374.84/157,853.97 - Step 6: Final answer
x = 119,010.99
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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.