Finding the Fourth Proportional to 128,929.12, 193,314.28 and 44,669.68
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Solution
The fourth proportional to 128,929.12, 193,314.28 and 44,669.68 is: 66,977.01
Step by Step Solution
- Step 1: Write the proportion equation
128,929.12 : 193,314.28 = 44,669.68 : x - Step 2: Convert to fraction form
128,929.12/193,314.28 = 44,669.68/x - Step 3: Cross multiply
128,929.12x = 193,314.28 × 44,669.68 - Step 4: Simplify right side
128,929.12x = 8,635,287,027.03 - Step 5: Solve for x
x = 8,635,287,027.03/128,929.12 - Step 6: Final answer
x = 66,977.01
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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.