Finding the Fourth Proportional to 128,310.84, 177,053.51 and 70,942.41
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Solution
The fourth proportional to 128,310.84, 177,053.51 and 70,942.41 is: 97,891.99
Step by Step Solution
- Step 1: Write the proportion equation
128,310.84 : 177,053.51 = 70,942.41 : x - Step 2: Convert to fraction form
128,310.84/177,053.51 = 70,942.41/x - Step 3: Cross multiply
128,310.84x = 177,053.51 × 70,942.41 - Step 4: Simplify right side
128,310.84x = 12,560,602,875.72 - Step 5: Solve for x
x = 12,560,602,875.72/128,310.84 - Step 6: Final answer
x = 97,891.99
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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.