Finding the Fourth Proportional to 128,819.30, 177,773.94 and 71,459.55
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Solution
The fourth proportional to 128,819.30, 177,773.94 and 71,459.55 is: 98,616.02
Step by Step Solution
- Step 1: Write the proportion equation
128,819.30 : 177,773.94 = 71,459.55 : x - Step 2: Convert to fraction form
128,819.30/177,773.94 = 71,459.55/x - Step 3: Cross multiply
128,819.30x = 177,773.94 × 71,459.55 - Step 4: Simplify right side
128,819.30x = 12,703,645,754.13 - Step 5: Solve for x
x = 12,703,645,754.13/128,819.30 - Step 6: Final answer
x = 98,616.02
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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.