Finding the Fourth Proportional to 120,542.80, 180,682.84 and 102,959.28
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Solution
The fourth proportional to 120,542.80, 180,682.84 and 102,959.28 is: 154,326.72
Step by Step Solution
- Step 1: Write the proportion equation
120,542.80 : 180,682.84 = 102,959.28 : x - Step 2: Convert to fraction form
120,542.80/180,682.84 = 102,959.28/x - Step 3: Cross multiply
120,542.80x = 180,682.84 × 102,959.28 - Step 4: Simplify right side
120,542.80x = 18,602,975,114.76 - Step 5: Solve for x
x = 18,602,975,114.76/120,542.80 - Step 6: Final answer
x = 154,326.72
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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.