Finding the Fourth Proportional to 128,683.08, 177,592.50 and 80,977.32
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Solution
The fourth proportional to 128,683.08, 177,592.50 and 80,977.32 is: 111,754.90
Step by Step Solution
- Step 1: Write the proportion equation
128,683.08 : 177,592.50 = 80,977.32 : x - Step 2: Convert to fraction form
128,683.08/177,592.50 = 80,977.32/x - Step 3: Cross multiply
128,683.08x = 177,592.50 × 80,977.32 - Step 4: Simplify right side
128,683.08x = 14,380,964,702.10 - Step 5: Solve for x
x = 14,380,964,702.10/128,683.08 - Step 6: Final answer
x = 111,754.90
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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.