Finding the Fourth Proportional to 156,978.10, 235,461.84 and 68,231.62
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Solution
The fourth proportional to 156,978.10, 235,461.84 and 68,231.62 is: 102,345.12
Step by Step Solution
- Step 1: Write the proportion equation
156,978.10 : 235,461.84 = 68,231.62 : x - Step 2: Convert to fraction form
156,978.10/235,461.84 = 68,231.62/x - Step 3: Cross multiply
156,978.10x = 235,461.84 × 68,231.62 - Step 4: Simplify right side
156,978.10x = 16,065,942,791.38 - Step 5: Solve for x
x = 16,065,942,791.38/156,978.10 - Step 6: Final answer
x = 102,345.12
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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.