Finding the Fourth Proportional to 140,153.96, 193,409.94 and 76,490.12
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Solution
The fourth proportional to 140,153.96, 193,409.94 and 76,490.12 is: 105,554.99
Step by Step Solution
- Step 1: Write the proportion equation
140,153.96 : 193,409.94 = 76,490.12 : x - Step 2: Convert to fraction form
140,153.96/193,409.94 = 76,490.12/x - Step 3: Cross multiply
140,153.96x = 193,409.94 × 76,490.12 - Step 4: Simplify right side
140,153.96x = 14,793,949,519.79 - Step 5: Solve for x
x = 14,793,949,519.79/140,153.96 - Step 6: Final answer
x = 105,554.99
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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.