Finding the Fourth Proportional to 157,965.66, 217,995.75 and 86,348.70
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Solution
The fourth proportional to 157,965.66, 217,995.75 and 86,348.70 is: 119,162.92
Step by Step Solution
- Step 1: Write the proportion equation
157,965.66 : 217,995.75 = 86,348.70 : x - Step 2: Convert to fraction form
157,965.66/217,995.75 = 86,348.70/x - Step 3: Cross multiply
157,965.66x = 217,995.75 × 86,348.70 - Step 4: Simplify right side
157,965.66x = 18,823,649,618.03 - Step 5: Solve for x
x = 18,823,649,618.03/157,965.66 - Step 6: Final answer
x = 119,162.92
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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.