Finding the Fourth Proportional to 120,759.54, 166,532.28 and 77,695.08
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Solution
The fourth proportional to 120,759.54, 166,532.28 and 77,695.08 is: 107,144.65
Step by Step Solution
- Step 1: Write the proportion equation
120,759.54 : 166,532.28 = 77,695.08 : x - Step 2: Convert to fraction form
120,759.54/166,532.28 = 77,695.08/x - Step 3: Cross multiply
120,759.54x = 166,532.28 × 77,695.08 - Step 4: Simplify right side
120,759.54x = 12,938,738,817.18 - Step 5: Solve for x
x = 12,938,738,817.18/120,759.54 - Step 6: Final answer
x = 107,144.65
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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.