Finding the Fourth Proportional to 132,968.72, 198,674.36 and 128,317.70
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Solution
The fourth proportional to 132,968.72, 198,674.36 and 128,317.70 is: 191,725.07
Step by Step Solution
- Step 1: Write the proportion equation
132,968.72 : 198,674.36 = 128,317.70 : x - Step 2: Convert to fraction form
132,968.72/198,674.36 = 128,317.70/x - Step 3: Cross multiply
132,968.72x = 198,674.36 × 128,317.70 - Step 4: Simplify right side
132,968.72x = 25,493,436,924.17 - Step 5: Solve for x
x = 25,493,436,924.17/132,968.72 - Step 6: Final answer
x = 191,725.07
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.