Finding the Fourth Proportional to 128,543.84, 177,344.88 and 83,754.08
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Solution
The fourth proportional to 128,543.84, 177,344.88 and 83,754.08 is: 115,550.91
Step by Step Solution
- Step 1: Write the proportion equation
128,543.84 : 177,344.88 = 83,754.08 : x - Step 2: Convert to fraction form
128,543.84/177,344.88 = 83,754.08/x - Step 3: Cross multiply
128,543.84x = 177,344.88 × 83,754.08 - Step 4: Simplify right side
128,543.84x = 14,853,357,267.11 - Step 5: Solve for x
x = 14,853,357,267.11/128,543.84 - Step 6: Final answer
x = 115,550.91
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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.