Finding the Fourth Proportional to 128,703.96, 177,467.58 and 80,898.84
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Solution
The fourth proportional to 128,703.96, 177,467.58 and 80,898.84 is: 111,549.96
Step by Step Solution
- Step 1: Write the proportion equation
128,703.96 : 177,467.58 = 80,898.84 : x - Step 2: Convert to fraction form
128,703.96/177,467.58 = 80,898.84/x - Step 3: Cross multiply
128,703.96x = 177,467.58 × 80,898.84 - Step 4: Simplify right side
128,703.96x = 14,356,921,359.61 - Step 5: Solve for x
x = 14,356,921,359.61/128,703.96 - Step 6: Final answer
x = 111,549.96
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1.5x scale
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.