Finding the Fourth Proportional to 120,665.20, 166,542.21 and 69,686.23
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Solution
The fourth proportional to 120,665.20, 166,542.21 and 69,686.23 is: 96,180.99
Step by Step Solution
- Step 1: Write the proportion equation
120,665.20 : 166,542.21 = 69,686.23 : x - Step 2: Convert to fraction form
120,665.20/166,542.21 = 69,686.23/x - Step 3: Cross multiply
120,665.20x = 166,542.21 × 69,686.23 - Step 4: Simplify right side
120,665.20x = 11,605,697,569.63 - Step 5: Solve for x
x = 11,605,697,569.63/120,665.20 - Step 6: Final answer
x = 96,180.99
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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.