Finding the Fourth Proportional to 104,139.68, 156,261.36 and 76,664.48
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Solution
The fourth proportional to 104,139.68, 156,261.36 and 76,664.48 is: 115,034.88
Step by Step Solution
- Step 1: Write the proportion equation
104,139.68 : 156,261.36 = 76,664.48 : x - Step 2: Convert to fraction form
104,139.68/156,261.36 = 76,664.48/x - Step 3: Cross multiply
104,139.68x = 156,261.36 × 76,664.48 - Step 4: Simplify right side
104,139.68x = 11,979,695,908.49 - Step 5: Solve for x
x = 11,979,695,908.49/104,139.68 - Step 6: Final answer
x = 115,034.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.