Finding the Fourth Proportional to 112,574.21, 168,639.40 and 91,538.00
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Solution
The fourth proportional to 112,574.21, 168,639.40 and 91,538.00 is: 137,126.54
Step by Step Solution
- Step 1: Write the proportion equation
112,574.21 : 168,639.40 = 91,538.00 : x - Step 2: Convert to fraction form
112,574.21/168,639.40 = 91,538.00/x - Step 3: Cross multiply
112,574.21x = 168,639.40 × 91,538.00 - Step 4: Simplify right side
112,574.21x = 15,436,912,096.31 - Step 5: Solve for x
x = 15,436,912,096.31/112,574.21 - Step 6: Final answer
x = 137,126.54
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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.