Finding the Fourth Proportional to 141,799.48, 195,683.94 and 78,135.96
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Solution
The fourth proportional to 141,799.48, 195,683.94 and 78,135.96 is: 107,827.99
Step by Step Solution
- Step 1: Write the proportion equation
141,799.48 : 195,683.94 = 78,135.96 : x - Step 2: Convert to fraction form
141,799.48/195,683.94 = 78,135.96/x - Step 3: Cross multiply
141,799.48x = 195,683.94 × 78,135.96 - Step 4: Simplify right side
141,799.48x = 15,289,952,508.48 - Step 5: Solve for x
x = 15,289,952,508.48/141,799.48 - Step 6: Final answer
x = 107,827.99
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1.5x scale
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.