Finding the Fourth Proportional to 157,609.70, 236,414.55 and 78,877.70
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Solution
The fourth proportional to 157,609.70, 236,414.55 and 78,877.70 is: 118,316.55
Step by Step Solution
- Step 1: Write the proportion equation
157,609.70 : 236,414.55 = 78,877.70 : x - Step 2: Convert to fraction form
157,609.70/236,414.55 = 78,877.70/x - Step 3: Cross multiply
157,609.70x = 236,414.55 × 78,877.70 - Step 4: Simplify right side
157,609.70x = 18,647,835,950.54 - Step 5: Solve for x
x = 18,647,835,950.54/157,609.70 - Step 6: Final answer
x = 118,316.55
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1.5x scale
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.