Finding the Fourth Proportional to 128,466.20, 192,440.10 and 89,067.80
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Solution
The fourth proportional to 128,466.20, 192,440.10 and 89,067.80 is: 133,421.99
Step by Step Solution
- Step 1: Write the proportion equation
128,466.20 : 192,440.10 = 89,067.80 : x - Step 2: Convert to fraction form
128,466.20/192,440.10 = 89,067.80/x - Step 3: Cross multiply
128,466.20x = 192,440.10 × 89,067.80 - Step 4: Simplify right side
128,466.20x = 17,140,216,338.78 - Step 5: Solve for x
x = 17,140,216,338.78/128,466.20 - Step 6: Final answer
x = 133,421.99
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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.