Finding the Fourth Proportional to 108,708.21, 149,966.24 and 76,894.65
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Solution
The fourth proportional to 108,708.21, 149,966.24 and 76,894.65 is: 106,078.48
Step by Step Solution
- Step 1: Write the proportion equation
108,708.21 : 149,966.24 = 76,894.65 : x - Step 2: Convert to fraction form
108,708.21/149,966.24 = 76,894.65/x - Step 3: Cross multiply
108,708.21x = 149,966.24 × 76,894.65 - Step 4: Simplify right side
108,708.21x = 11,531,601,152.14 - Step 5: Solve for x
x = 11,531,601,152.14/108,708.21 - Step 6: Final answer
x = 106,078.48
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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.