Finding the Fourth Proportional to 156,942.49, 235,281.09 and 68,129.23
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Solution
The fourth proportional to 156,942.49, 235,281.09 and 68,129.23 is: 102,136.26
Step by Step Solution
- Step 1: Write the proportion equation
156,942.49 : 235,281.09 = 68,129.23 : x - Step 2: Convert to fraction form
156,942.49/235,281.09 = 68,129.23/x - Step 3: Cross multiply
156,942.49x = 235,281.09 × 68,129.23 - Step 4: Simplify right side
156,942.49x = 16,029,519,495.26 - Step 5: Solve for x
x = 16,029,519,495.26/156,942.49 - Step 6: Final answer
x = 102,136.26
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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.