Finding the Fourth Proportional to 128,752.80, 193,129.20 and 88,663.20
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Solution
The fourth proportional to 128,752.80, 193,129.20 and 88,663.20 is: 132,994.80
Step by Step Solution
- Step 1: Write the proportion equation
128,752.80 : 193,129.20 = 88,663.20 : x - Step 2: Convert to fraction form
128,752.80/193,129.20 = 88,663.20/x - Step 3: Cross multiply
128,752.80x = 193,129.20 × 88,663.20 - Step 4: Simplify right side
128,752.80x = 17,123,452,885.44 - Step 5: Solve for x
x = 17,123,452,885.44/128,752.80 - Step 6: Final answer
x = 132,994.80
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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.