Finding the Fourth Proportional to 129,219.81, 193,829.71 and 40,473.62
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Solution
The fourth proportional to 129,219.81, 193,829.71 and 40,473.62 is: 60,710.44
Step by Step Solution
- Step 1: Write the proportion equation
129,219.81 : 193,829.71 = 40,473.62 : x - Step 2: Convert to fraction form
129,219.81/193,829.71 = 40,473.62/x - Step 3: Cross multiply
129,219.81x = 193,829.71 × 40,473.62 - Step 4: Simplify right side
129,219.81x = 7,844,990,849.96 - Step 5: Solve for x
x = 7,844,990,849.96/129,219.81 - Step 6: Final answer
x = 60,710.44
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.