Finding the Fourth Proportional to 140,147.76, 193,407.99 and 76,489.68
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Solution
The fourth proportional to 140,147.76, 193,407.99 and 76,489.68 is: 105,557.99
Step by Step Solution
- Step 1: Write the proportion equation
140,147.76 : 193,407.99 = 76,489.68 : x - Step 2: Convert to fraction form
140,147.76/193,407.99 = 76,489.68/x - Step 3: Cross multiply
140,147.76x = 193,407.99 × 76,489.68 - Step 4: Simplify right side
140,147.76x = 14,793,715,264.54 - Step 5: Solve for x
x = 14,793,715,264.54/140,147.76 - Step 6: Final answer
x = 105,557.99
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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.