Finding the Fourth Proportional to 131,709.65, 181,757.93 and 71,278.99
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Solution
The fourth proportional to 131,709.65, 181,757.93 and 71,278.99 is: 98,364.25
Step by Step Solution
- Step 1: Write the proportion equation
131,709.65 : 181,757.93 = 71,278.99 : x - Step 2: Convert to fraction form
131,709.65/181,757.93 = 71,278.99/x - Step 3: Cross multiply
131,709.65x = 181,757.93 × 71,278.99 - Step 4: Simplify right side
131,709.65x = 12,955,520,864.10 - Step 5: Solve for x
x = 12,955,520,864.10/131,709.65 - Step 6: Final answer
x = 98,364.25
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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.