Finding the Fourth Proportional to 138,673.92, 191,369.36 and 75,011.84
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Solution
The fourth proportional to 138,673.92, 191,369.36 and 75,011.84 is: 103,515.99
Step by Step Solution
- Step 1: Write the proportion equation
138,673.92 : 191,369.36 = 75,011.84 : x - Step 2: Convert to fraction form
138,673.92/191,369.36 = 75,011.84/x - Step 3: Cross multiply
138,673.92x = 191,369.36 × 75,011.84 - Step 4: Simplify right side
138,673.92x = 14,354,967,813.22 - Step 5: Solve for x
x = 14,354,967,813.22/138,673.92 - Step 6: Final answer
x = 103,515.99
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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.