Finding the Fourth Proportional to 149,148.69, 205,829.49 and 81,170.04
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Solution
The fourth proportional to 149,148.69, 205,829.49 and 81,170.04 is: 112,016.99
Step by Step Solution
- Step 1: Write the proportion equation
149,148.69 : 205,829.49 = 81,170.04 : x - Step 2: Convert to fraction form
149,148.69/205,829.49 = 81,170.04/x - Step 3: Cross multiply
149,148.69x = 205,829.49 × 81,170.04 - Step 4: Simplify right side
149,148.69x = 16,707,187,936.48 - Step 5: Solve for x
x = 16,707,187,936.48/149,148.69 - Step 6: Final answer
x = 112,016.99
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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.