Finding the Fourth Proportional to 157,678.99, 217,597.19 and 86,058.99
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Solution
The fourth proportional to 157,678.99, 217,597.19 and 86,058.99 is: 118,761.51
Step by Step Solution
- Step 1: Write the proportion equation
157,678.99 : 217,597.19 = 86,058.99 : x - Step 2: Convert to fraction form
157,678.99/217,597.19 = 86,058.99/x - Step 3: Cross multiply
157,678.99x = 217,597.19 × 86,058.99 - Step 4: Simplify right side
157,678.99x = 18,726,193,967.94 - Step 5: Solve for x
x = 18,726,193,967.94/157,678.99 - Step 6: Final answer
x = 118,761.51
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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.