Finding the Fourth Proportional to 138,745.99, 191,470.05 and 75,083.79
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Solution
The fourth proportional to 138,745.99, 191,470.05 and 75,083.79 is: 103,615.95
Step by Step Solution
- Step 1: Write the proportion equation
138,745.99 : 191,470.05 = 75,083.79 : x - Step 2: Convert to fraction form
138,745.99/191,470.05 = 75,083.79/x - Step 3: Cross multiply
138,745.99x = 191,470.05 × 75,083.79 - Step 4: Simplify right side
138,745.99x = 14,376,297,025.49 - Step 5: Solve for x
x = 14,376,297,025.49/138,745.99 - Step 6: Final answer
x = 103,615.95
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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.