Finding the Fourth Proportional to 128,660.81, 177,397.49 and 110,724.98
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Solution
The fourth proportional to 128,660.81, 177,397.49 and 110,724.98 is: 152,667.57
Step by Step Solution
- Step 1: Write the proportion equation
128,660.81 : 177,397.49 = 110,724.98 : x - Step 2: Convert to fraction form
128,660.81/177,397.49 = 110,724.98/x - Step 3: Cross multiply
128,660.81x = 177,397.49 × 110,724.98 - Step 4: Simplify right side
128,660.81x = 19,642,332,922.13 - Step 5: Solve for x
x = 19,642,332,922.13/128,660.81 - Step 6: Final answer
x = 152,667.57
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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.