Finding the Fourth Proportional to 137,542.36, 189,808.97 and 80,221.26
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Solution
The fourth proportional to 137,542.36, 189,808.97 and 80,221.26 is: 110,705.64
Step by Step Solution
- Step 1: Write the proportion equation
137,542.36 : 189,808.97 = 80,221.26 : x - Step 2: Convert to fraction form
137,542.36/189,808.97 = 80,221.26/x - Step 3: Cross multiply
137,542.36x = 189,808.97 × 80,221.26 - Step 4: Simplify right side
137,542.36x = 15,226,714,426.95 - Step 5: Solve for x
x = 15,226,714,426.95/137,542.36 - Step 6: Final answer
x = 110,705.64
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.