Finding the Fourth Proportional to 121,135.14, 181,733.09 and 71,256.96
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Solution
The fourth proportional to 121,135.14, 181,733.09 and 71,256.96 is: 106,903.31
Step by Step Solution
- Step 1: Write the proportion equation
121,135.14 : 181,733.09 = 71,256.96 : x - Step 2: Convert to fraction form
121,135.14/181,733.09 = 71,256.96/x - Step 3: Cross multiply
121,135.14x = 181,733.09 × 71,256.96 - Step 4: Simplify right side
121,135.14x = 12,949,747,168.52 - Step 5: Solve for x
x = 12,949,747,168.52/121,135.14 - Step 6: Final answer
x = 106,903.31
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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.