Finding the Fourth Proportional to 128,264.84, 177,005.40 and 71,676.08
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Solution
The fourth proportional to 128,264.84, 177,005.40 and 71,676.08 is: 98,912.95
Step by Step Solution
- Step 1: Write the proportion equation
128,264.84 : 177,005.40 = 71,676.08 : x - Step 2: Convert to fraction form
128,264.84/177,005.40 = 71,676.08/x - Step 3: Cross multiply
128,264.84x = 177,005.40 × 71,676.08 - Step 4: Simplify right side
128,264.84x = 12,687,053,210.83 - Step 5: Solve for x
x = 12,687,053,210.83/128,264.84 - Step 6: Final answer
x = 98,912.95
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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.