Finding the Fourth Proportional to 128,655.63, 177,410.93 and 101,755.53
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Solution
The fourth proportional to 128,655.63, 177,410.93 and 101,755.53 is: 140,316.77
Step by Step Solution
- Step 1: Write the proportion equation
128,655.63 : 177,410.93 = 101,755.53 : x - Step 2: Convert to fraction form
128,655.63/177,410.93 = 101,755.53/x - Step 3: Cross multiply
128,655.63x = 177,410.93 × 101,755.53 - Step 4: Simplify right side
128,655.63x = 18,052,542,701.17 - Step 5: Solve for x
x = 18,052,542,701.17/128,655.63 - Step 6: Final answer
x = 140,316.77
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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.