Finding the Fourth Proportional to 131,853.68, 181,958.06 and 71,424.31
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Solution
The fourth proportional to 131,853.68, 181,958.06 and 71,424.31 is: 98,565.53
Step by Step Solution
- Step 1: Write the proportion equation
131,853.68 : 181,958.06 = 71,424.31 : x - Step 2: Convert to fraction form
131,853.68/181,958.06 = 71,424.31/x - Step 3: Cross multiply
131,853.68x = 181,958.06 × 71,424.31 - Step 4: Simplify right side
131,853.68x = 12,996,228,437.52 - Step 5: Solve for x
x = 12,996,228,437.52/131,853.68 - Step 6: Final answer
x = 98,565.53
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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.