Finding the Fourth Proportional to 128,694.66, 193,109.30 and 93,447.14
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Solution
The fourth proportional to 128,694.66, 193,109.30 and 93,447.14 is: 140,219.58
Step by Step Solution
- Step 1: Write the proportion equation
128,694.66 : 193,109.30 = 93,447.14 : x - Step 2: Convert to fraction form
128,694.66/193,109.30 = 93,447.14/x - Step 3: Cross multiply
128,694.66x = 193,109.30 × 93,447.14 - Step 4: Simplify right side
128,694.66x = 18,045,510,710.05 - Step 5: Solve for x
x = 18,045,510,710.05/128,694.66 - Step 6: Final answer
x = 140,219.58
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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.