Finding the Fourth Proportional to 158,492.97, 218,725.74 and 86,872.95
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Solution
The fourth proportional to 158,492.97, 218,725.74 and 86,872.95 is: 119,887.65
Step by Step Solution
- Step 1: Write the proportion equation
158,492.97 : 218,725.74 = 86,872.95 : x - Step 2: Convert to fraction form
158,492.97/218,725.74 = 86,872.95/x - Step 3: Cross multiply
158,492.97x = 218,725.74 × 86,872.95 - Step 4: Simplify right side
158,492.97x = 19,001,350,274.73 - Step 5: Solve for x
x = 19,001,350,274.73/158,492.97 - Step 6: Final answer
x = 119,887.65
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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.