Finding the Fourth Proportional to 129,695.99, 179,063.76 and 81,364.18
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Solution
The fourth proportional to 129,695.99, 179,063.76 and 81,364.18 is: 112,334.82
Step by Step Solution
- Step 1: Write the proportion equation
129,695.99 : 179,063.76 = 81,364.18 : x - Step 2: Convert to fraction form
129,695.99/179,063.76 = 81,364.18/x - Step 3: Cross multiply
129,695.99x = 179,063.76 × 81,364.18 - Step 4: Simplify right side
129,695.99x = 14,569,375,552.46 - Step 5: Solve for x
x = 14,569,375,552.46/129,695.99 - Step 6: Final answer
x = 112,334.82
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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.