Finding the Fourth Proportional to 140,664.84, 194,110.20 and 76,990.56
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Solution
The fourth proportional to 140,664.84, 194,110.20 and 76,990.56 is: 106,242.99
Step by Step Solution
- Step 1: Write the proportion equation
140,664.84 : 194,110.20 = 76,990.56 : x - Step 2: Convert to fraction form
140,664.84/194,110.20 = 76,990.56/x - Step 3: Cross multiply
140,664.84x = 194,110.20 × 76,990.56 - Step 4: Simplify right side
140,664.84x = 14,944,652,999.71 - Step 5: Solve for x
x = 14,944,652,999.71/140,664.84 - Step 6: Final answer
x = 106,242.99
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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.