Finding the Fourth Proportional to 157,886.59, 217,877.09 and 86,269.09
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Solution
The fourth proportional to 157,886.59, 217,877.09 and 86,269.09 is: 119,047.84
Step by Step Solution
- Step 1: Write the proportion equation
157,886.59 : 217,877.09 = 86,269.09 : x - Step 2: Convert to fraction form
157,886.59/217,877.09 = 86,269.09/x - Step 3: Cross multiply
157,886.59x = 217,877.09 × 86,269.09 - Step 4: Simplify right side
157,886.59x = 18,796,058,286.15 - Step 5: Solve for x
x = 18,796,058,286.15/157,886.59 - Step 6: Final answer
x = 119,047.84
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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.