Finding the Fourth Proportional to 156,396.87, 215,824.23 and 84,775.05
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Solution
The fourth proportional to 156,396.87, 215,824.23 and 84,775.05 is: 116,987.70
Step by Step Solution
- Step 1: Write the proportion equation
156,396.87 : 215,824.23 = 84,775.05 : x - Step 2: Convert to fraction form
156,396.87/215,824.23 = 84,775.05/x - Step 3: Cross multiply
156,396.87x = 215,824.23 × 84,775.05 - Step 4: Simplify right side
156,396.87x = 18,296,509,889.46 - Step 5: Solve for x
x = 18,296,509,889.46/156,396.87 - Step 6: Final answer
x = 116,987.70
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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.