Finding the Fourth Proportional to 157,769.16, 217,725.08 and 86,149.68
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Solution
The fourth proportional to 157,769.16, 217,725.08 and 86,149.68 is: 118,888.55
Step by Step Solution
- Step 1: Write the proportion equation
157,769.16 : 217,725.08 = 86,149.68 : x - Step 2: Convert to fraction form
157,769.16/217,725.08 = 86,149.68/x - Step 3: Cross multiply
157,769.16x = 217,725.08 × 86,149.68 - Step 4: Simplify right side
157,769.16x = 18,756,945,969.97 - Step 5: Solve for x
x = 18,756,945,969.97/157,769.16 - Step 6: Final answer
x = 118,888.55
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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.