Finding the Fourth Proportional to 105,382.71, 145,361.66 and 73,539.99
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Solution
The fourth proportional to 105,382.71, 145,361.66 and 73,539.99 is: 101,438.79
Step by Step Solution
- Step 1: Write the proportion equation
105,382.71 : 145,361.66 = 73,539.99 : x - Step 2: Convert to fraction form
105,382.71/145,361.66 = 73,539.99/x - Step 3: Cross multiply
105,382.71x = 145,361.66 × 73,539.99 - Step 4: Simplify right side
105,382.71x = 10,689,894,655.08 - Step 5: Solve for x
x = 10,689,894,655.08/105,382.71 - Step 6: Final answer
x = 101,438.79
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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.