Finding the Fourth Proportional to 128,266.68, 177,006.74 and 71,678.06
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Solution
The fourth proportional to 128,266.68, 177,006.74 and 71,678.06 is: 98,915.00
Step by Step Solution
- Step 1: Write the proportion equation
128,266.68 : 177,006.74 = 71,678.06 : x - Step 2: Convert to fraction form
128,266.68/177,006.74 = 71,678.06/x - Step 3: Cross multiply
128,266.68x = 177,006.74 × 71,678.06 - Step 4: Simplify right side
128,266.68x = 12,687,498,486.70 - Step 5: Solve for x
x = 12,687,498,486.70/128,266.68 - Step 6: Final answer
x = 98,915.00
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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.