Finding the Fourth Proportional to 135,810.42, 187,409.50 and 75,378.13
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Solution
The fourth proportional to 135,810.42, 187,409.50 and 75,378.13 is: 104,016.89
Step by Step Solution
- Step 1: Write the proportion equation
135,810.42 : 187,409.50 = 75,378.13 : x - Step 2: Convert to fraction form
135,810.42/187,409.50 = 75,378.13/x - Step 3: Cross multiply
135,810.42x = 187,409.50 × 75,378.13 - Step 4: Simplify right side
135,810.42x = 14,126,577,654.24 - Step 5: Solve for x
x = 14,126,577,654.24/135,810.42 - Step 6: Final answer
x = 104,016.89
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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.