Finding the Fourth Proportional to 128,517.80, 192,776.70 and 58,533.80
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Solution
The fourth proportional to 128,517.80, 192,776.70 and 58,533.80 is: 87,800.70
Step by Step Solution
- Step 1: Write the proportion equation
128,517.80 : 192,776.70 = 58,533.80 : x - Step 2: Convert to fraction form
128,517.80/192,776.70 = 58,533.80/x - Step 3: Cross multiply
128,517.80x = 192,776.70 × 58,533.80 - Step 4: Simplify right side
128,517.80x = 11,283,952,802.46 - Step 5: Solve for x
x = 11,283,952,802.46/128,517.80 - Step 6: Final answer
x = 87,800.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.