Finding the Fourth Proportional to 121,838.59, 168,136.79 and 68,123.44
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Solution
The fourth proportional to 121,838.59, 168,136.79 and 68,123.44 is: 94,010.09
Step by Step Solution
- Step 1: Write the proportion equation
121,838.59 : 168,136.79 = 68,123.44 : x - Step 2: Convert to fraction form
121,838.59/168,136.79 = 68,123.44/x - Step 3: Cross multiply
121,838.59x = 168,136.79 × 68,123.44 - Step 4: Simplify right side
121,838.59x = 11,454,056,525.36 - Step 5: Solve for x
x = 11,454,056,525.36/121,838.59 - Step 6: Final answer
x = 94,010.09
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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.