Finding the Fourth Proportional to 138,894.17, 191,673.97 and 75,231.99
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Solution
The fourth proportional to 138,894.17, 191,673.97 and 75,231.99 is: 103,820.15
Step by Step Solution
- Step 1: Write the proportion equation
138,894.17 : 191,673.97 = 75,231.99 : x - Step 2: Convert to fraction form
138,894.17/191,673.97 = 75,231.99/x - Step 3: Cross multiply
138,894.17x = 191,673.97 × 75,231.99 - Step 4: Simplify right side
138,894.17x = 14,420,014,006.22 - Step 5: Solve for x
x = 14,420,014,006.22/138,894.17 - Step 6: Final answer
x = 103,820.15
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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.