Finding the Fourth Proportional to 132,832.80, 198,730.80 and 86,176.80
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Solution
The fourth proportional to 132,832.80, 198,730.80 and 86,176.80 is: 128,928.88
Step by Step Solution
- Step 1: Write the proportion equation
132,832.80 : 198,730.80 = 86,176.80 : x - Step 2: Convert to fraction form
132,832.80/198,730.80 = 86,176.80/x - Step 3: Cross multiply
132,832.80x = 198,730.80 × 86,176.80 - Step 4: Simplify right side
132,832.80x = 17,125,984,405.44 - Step 5: Solve for x
x = 17,125,984,405.44/132,832.80 - Step 6: Final answer
x = 128,928.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.