Finding the Fourth Proportional to 157,331.07, 217,115.81 and 85,711.14
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Solution
The fourth proportional to 157,331.07, 217,115.81 and 85,711.14 is: 118,280.79
Step by Step Solution
- Step 1: Write the proportion equation
157,331.07 : 217,115.81 = 85,711.14 : x - Step 2: Convert to fraction form
157,331.07/217,115.81 = 85,711.14/x - Step 3: Cross multiply
157,331.07x = 217,115.81 × 85,711.14 - Step 4: Simplify right side
157,331.07x = 18,609,243,158.57 - Step 5: Solve for x
x = 18,609,243,158.57/157,331.07 - Step 6: Final answer
x = 118,280.79
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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.