Finding the Fourth Proportional to 157,755.51, 217,700.96 and 86,135.31
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Solution
The fourth proportional to 157,755.51, 217,700.96 and 86,135.31 is: 118,865.83
Step by Step Solution
- Step 1: Write the proportion equation
157,755.51 : 217,700.96 = 86,135.31 : x - Step 2: Convert to fraction form
157,755.51/217,700.96 = 86,135.31/x - Step 3: Cross multiply
157,755.51x = 217,700.96 × 86,135.31 - Step 4: Simplify right side
157,755.51x = 18,751,739,246.22 - Step 5: Solve for x
x = 18,751,739,246.22/157,755.51 - Step 6: Final answer
x = 118,865.83
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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.