Finding the Fourth Proportional to 157,234.08, 216,979.92 and 85,614.96
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Solution
The fourth proportional to 157,234.08, 216,979.92 and 85,614.96 is: 118,146.95
Step by Step Solution
- Step 1: Write the proportion equation
157,234.08 : 216,979.92 = 85,614.96 : x - Step 2: Convert to fraction form
157,234.08/216,979.92 = 85,614.96/x - Step 3: Cross multiply
157,234.08x = 216,979.92 × 85,614.96 - Step 4: Simplify right side
157,234.08x = 18,576,727,171.60 - Step 5: Solve for x
x = 18,576,727,171.60/157,234.08 - Step 6: Final answer
x = 118,146.95
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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.