Finding the Fourth Proportional to 157,639.08, 217,542.48 and 86,020.68
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Solution
The fourth proportional to 157,639.08, 217,542.48 and 86,020.68 is: 118,708.84
Step by Step Solution
- Step 1: Write the proportion equation
157,639.08 : 217,542.48 = 86,020.68 : x - Step 2: Convert to fraction form
157,639.08/217,542.48 = 86,020.68/x - Step 3: Cross multiply
157,639.08x = 217,542.48 × 86,020.68 - Step 4: Simplify right side
157,639.08x = 18,713,152,058.49 - Step 5: Solve for x
x = 18,713,152,058.49/157,639.08 - Step 6: Final answer
x = 118,708.84
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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.