Finding the Fourth Proportional to 129,943.87, 194,565.35 and 84,853.53
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Solution
The fourth proportional to 129,943.87, 194,565.35 and 84,853.53 is: 127,051.45
Step by Step Solution
- Step 1: Write the proportion equation
129,943.87 : 194,565.35 = 84,853.53 : x - Step 2: Convert to fraction form
129,943.87/194,565.35 = 84,853.53/x - Step 3: Cross multiply
129,943.87x = 194,565.35 × 84,853.53 - Step 4: Simplify right side
129,943.87x = 16,509,556,975.32 - Step 5: Solve for x
x = 16,509,556,975.32/129,943.87 - Step 6: Final answer
x = 127,051.45
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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.