Finding the Fourth Proportional to 156,996.20, 235,494.30 and 129,181.70
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Solution
The fourth proportional to 156,996.20, 235,494.30 and 129,181.70 is: 193,772.55
Step by Step Solution
- Step 1: Write the proportion equation
156,996.20 : 235,494.30 = 129,181.70 : x - Step 2: Convert to fraction form
156,996.20/235,494.30 = 129,181.70/x - Step 3: Cross multiply
156,996.20x = 235,494.30 × 129,181.70 - Step 4: Simplify right side
156,996.20x = 30,421,554,014.31 - Step 5: Solve for x
x = 30,421,554,014.31/156,996.20 - Step 6: Final answer
x = 193,772.55
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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.