Finding the Fourth Proportional to 115,718.76, 159,761.61 and 75,502.26
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Solution
The fourth proportional to 115,718.76, 159,761.61 and 75,502.26 is: 104,238.61
Step by Step Solution
- Step 1: Write the proportion equation
115,718.76 : 159,761.61 = 75,502.26 : x - Step 2: Convert to fraction form
115,718.76/159,761.61 = 75,502.26/x - Step 3: Cross multiply
115,718.76x = 159,761.61 × 75,502.26 - Step 4: Simplify right side
115,718.76x = 12,062,362,616.24 - Step 5: Solve for x
x = 12,062,362,616.24/115,718.76 - Step 6: Final answer
x = 104,238.61
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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.