Finding the Fourth Proportional to 128,660.04, 177,551.28 and 71,301.96
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Solution
The fourth proportional to 128,660.04, 177,551.28 and 71,301.96 is: 98,396.94
Step by Step Solution
- Step 1: Write the proportion equation
128,660.04 : 177,551.28 = 71,301.96 : x - Step 2: Convert to fraction form
128,660.04/177,551.28 = 71,301.96/x - Step 3: Cross multiply
128,660.04x = 177,551.28 × 71,301.96 - Step 4: Simplify right side
128,660.04x = 12,659,754,264.51 - Step 5: Solve for x
x = 12,659,754,264.51/128,660.04 - Step 6: Final answer
x = 98,396.94
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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.