Finding the Fourth Proportional to 129,064.68, 178,110.36 and 72,481.32
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Solution
The fourth proportional to 129,064.68, 178,110.36 and 72,481.32 is: 100,024.84
Step by Step Solution
- Step 1: Write the proportion equation
129,064.68 : 178,110.36 = 72,481.32 : x - Step 2: Convert to fraction form
129,064.68/178,110.36 = 72,481.32/x - Step 3: Cross multiply
129,064.68x = 178,110.36 × 72,481.32 - Step 4: Simplify right side
129,064.68x = 12,909,673,998.48 - Step 5: Solve for x
x = 12,909,673,998.48/129,064.68 - Step 6: Final answer
x = 100,024.84
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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.