Finding the Fourth Proportional to 156,979.20, 235,172.49 and 92,745.68
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Solution
The fourth proportional to 156,979.20, 235,172.49 and 92,745.68 is: 138,943.46
Step by Step Solution
- Step 1: Write the proportion equation
156,979.20 : 235,172.49 = 92,745.68 : x - Step 2: Convert to fraction form
156,979.20/235,172.49 = 92,745.68/x - Step 3: Cross multiply
156,979.20x = 235,172.49 × 92,745.68 - Step 4: Simplify right side
156,979.20x = 21,811,232,734.21 - Step 5: Solve for x
x = 21,811,232,734.21/156,979.20 - Step 6: Final answer
x = 138,943.46
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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.