Finding the Fourth Proportional to 102,656.20, 153,984.30 and 91,769.80
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Solution
The fourth proportional to 102,656.20, 153,984.30 and 91,769.80 is: 137,654.70
Step by Step Solution
- Step 1: Write the proportion equation
102,656.20 : 153,984.30 = 91,769.80 : x - Step 2: Convert to fraction form
102,656.20/153,984.30 = 91,769.80/x - Step 3: Cross multiply
102,656.20x = 153,984.30 × 91,769.80 - Step 4: Simplify right side
102,656.20x = 14,131,108,414.14 - Step 5: Solve for x
x = 14,131,108,414.14/102,656.20 - Step 6: Final answer
x = 137,654.70
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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.