Finding the Fourth Proportional to 140,305.91, 193,619.01 and 76,643.96
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Solution
The fourth proportional to 140,305.91, 193,619.01 and 76,643.96 is: 105,766.95
Step by Step Solution
- Step 1: Write the proportion equation
140,305.91 : 193,619.01 = 76,643.96 : x - Step 2: Convert to fraction form
140,305.91/193,619.01 = 76,643.96/x - Step 3: Cross multiply
140,305.91x = 193,619.01 × 76,643.96 - Step 4: Simplify right side
140,305.91x = 14,839,727,657.68 - Step 5: Solve for x
x = 14,839,727,657.68/140,305.91 - Step 6: Final answer
x = 105,766.95
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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.