Finding the Fourth Proportional to 156,083.40, 215,396.69 and 84,465.09
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Solution
The fourth proportional to 156,083.40, 215,396.69 and 84,465.09 is: 116,562.69
Step by Step Solution
- Step 1: Write the proportion equation
156,083.40 : 215,396.69 = 84,465.09 : x - Step 2: Convert to fraction form
156,083.40/215,396.69 = 84,465.09/x - Step 3: Cross multiply
156,083.40x = 215,396.69 × 84,465.09 - Step 4: Simplify right side
156,083.40x = 18,193,500,384.23 - Step 5: Solve for x
x = 18,193,500,384.23/156,083.40 - Step 6: Final answer
x = 116,562.69
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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.