Finding the Fourth Proportional to 121,665.68, 182,143.38 and 81,184.31
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Solution
The fourth proportional to 121,665.68, 182,143.38 and 81,184.31 is: 121,539.49
Step by Step Solution
- Step 1: Write the proportion equation
121,665.68 : 182,143.38 = 81,184.31 : x - Step 2: Convert to fraction form
121,665.68/182,143.38 = 81,184.31/x - Step 3: Cross multiply
121,665.68x = 182,143.38 × 81,184.31 - Step 4: Simplify right side
121,665.68x = 14,787,184,703.13 - Step 5: Solve for x
x = 14,787,184,703.13/121,665.68 - Step 6: Final answer
x = 121,539.49
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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.