Finding the Fourth Proportional to 120,266.62, 180,396.21 and 57,132.19
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Solution
The fourth proportional to 120,266.62, 180,396.21 and 57,132.19 is: 85,696.51
Step by Step Solution
- Step 1: Write the proportion equation
120,266.62 : 180,396.21 = 57,132.19 : x - Step 2: Convert to fraction form
120,266.62/180,396.21 = 57,132.19/x - Step 3: Cross multiply
120,266.62x = 180,396.21 × 57,132.19 - Step 4: Simplify right side
120,266.62x = 10,306,429,970.01 - Step 5: Solve for x
x = 10,306,429,970.01/120,266.62 - Step 6: Final answer
x = 85,696.51
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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.