Finding the Fourth Proportional to 128,540.84, 177,340.74 and 83,751.08
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Solution
The fourth proportional to 128,540.84, 177,340.74 and 83,751.08 is: 115,546.77
Step by Step Solution
- Step 1: Write the proportion equation
128,540.84 : 177,340.74 = 83,751.08 : x - Step 2: Convert to fraction form
128,540.84/177,340.74 = 83,751.08/x - Step 3: Cross multiply
128,540.84x = 177,340.74 × 83,751.08 - Step 4: Simplify right side
128,540.84x = 14,852,478,503.00 - Step 5: Solve for x
x = 14,852,478,503.00/128,540.84 - Step 6: Final answer
x = 115,546.77
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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.