Finding the Fourth Proportional to 121,183.60, 181,753.80 and 76,730.80
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Solution
The fourth proportional to 121,183.60, 181,753.80 and 76,730.80 is: 115,082.52
Step by Step Solution
- Step 1: Write the proportion equation
121,183.60 : 181,753.80 = 76,730.80 : x - Step 2: Convert to fraction form
121,183.60/181,753.80 = 76,730.80/x - Step 3: Cross multiply
121,183.60x = 181,753.80 × 76,730.80 - Step 4: Simplify right side
121,183.60x = 13,946,114,477.04 - Step 5: Solve for x
x = 13,946,114,477.04/121,183.60 - Step 6: Final answer
x = 115,082.52
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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.