Finding the Fourth Proportional to 128,796.97, 177,534.52 and 101,528.62
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Solution
The fourth proportional to 128,796.97, 177,534.52 and 101,528.62 is: 139,947.66
Step by Step Solution
- Step 1: Write the proportion equation
128,796.97 : 177,534.52 = 101,528.62 : x - Step 2: Convert to fraction form
128,796.97/177,534.52 = 101,528.62/x - Step 3: Cross multiply
128,796.97x = 177,534.52 × 101,528.62 - Step 4: Simplify right side
128,796.97x = 18,024,834,817.96 - Step 5: Solve for x
x = 18,024,834,817.96/128,796.97 - Step 6: Final answer
x = 139,947.66
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1.5x scale
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.