Finding the Fourth Proportional to 128,544.16, 177,411.52 and 98,271.20
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Solution
The fourth proportional to 128,544.16, 177,411.52 and 98,271.20 is: 135,629.99
Step by Step Solution
- Step 1: Write the proportion equation
128,544.16 : 177,411.52 = 98,271.20 : x - Step 2: Convert to fraction form
128,544.16/177,411.52 = 98,271.20/x - Step 3: Cross multiply
128,544.16x = 177,411.52 × 98,271.20 - Step 4: Simplify right side
128,544.16x = 17,434,442,964.22 - Step 5: Solve for x
x = 17,434,442,964.22/128,544.16 - Step 6: Final answer
x = 135,629.99
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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.