Finding the Fourth Proportional to 121,497.30, 182,245.95 and 85,727.70
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Solution
The fourth proportional to 121,497.30, 182,245.95 and 85,727.70 is: 128,591.55
Step by Step Solution
- Step 1: Write the proportion equation
121,497.30 : 182,245.95 = 85,727.70 : x - Step 2: Convert to fraction form
121,497.30/182,245.95 = 85,727.70/x - Step 3: Cross multiply
121,497.30x = 182,245.95 × 85,727.70 - Step 4: Simplify right side
121,497.30x = 15,623,526,127.82 - Step 5: Solve for x
x = 15,623,526,127.82/121,497.30 - Step 6: Final answer
x = 128,591.55
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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.