Finding the Fourth Proportional to 149,122.70, 205,722.30 and 88,660.40
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Solution
The fourth proportional to 149,122.70, 205,722.30 and 88,660.40 is: 122,311.50
Step by Step Solution
- Step 1: Write the proportion equation
149,122.70 : 205,722.30 = 88,660.40 : x - Step 2: Convert to fraction form
149,122.70/205,722.30 = 88,660.40/x - Step 3: Cross multiply
149,122.70x = 205,722.30 × 88,660.40 - Step 4: Simplify right side
149,122.70x = 18,239,421,406.92 - Step 5: Solve for x
x = 18,239,421,406.92/149,122.70 - Step 6: Final answer
x = 122,311.50
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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.