Finding the Fourth Proportional to 189,154.73, 261,011.10 and 128,706.05
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Solution
The fourth proportional to 189,154.73, 261,011.10 and 128,706.05 is: 177,599.09
Step by Step Solution
- Step 1: Write the proportion equation
189,154.73 : 261,011.10 = 128,706.05 : x - Step 2: Convert to fraction form
189,154.73/261,011.10 = 128,706.05/x - Step 3: Cross multiply
189,154.73x = 261,011.10 × 128,706.05 - Step 4: Simplify right side
189,154.73x = 33,593,706,382.10 - Step 5: Solve for x
x = 33,593,706,382.10/189,154.73 - Step 6: Final answer
x = 177,599.09
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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.