Finding the Fourth Proportional to 120,777.88, 180,353.50 and 98,635.18
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Solution
The fourth proportional to 120,777.88, 180,353.50 and 98,635.18 is: 147,288.56
Step by Step Solution
- Step 1: Write the proportion equation
120,777.88 : 180,353.50 = 98,635.18 : x - Step 2: Convert to fraction form
120,777.88/180,353.50 = 98,635.18/x - Step 3: Cross multiply
120,777.88x = 180,353.50 × 98,635.18 - Step 4: Simplify right side
120,777.88x = 17,789,199,936.13 - Step 5: Solve for x
x = 17,789,199,936.13/120,777.88 - Step 6: Final answer
x = 147,288.56
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.