Finding the Fourth Proportional to 135,722.96, 187,232.74 and 81,237.96
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Solution
The fourth proportional to 135,722.96, 187,232.74 and 81,237.96 is: 112,069.51
Step by Step Solution
- Step 1: Write the proportion equation
135,722.96 : 187,232.74 = 81,237.96 : x - Step 2: Convert to fraction form
135,722.96/187,232.74 = 81,237.96/x - Step 3: Cross multiply
135,722.96x = 187,232.74 × 81,237.96 - Step 4: Simplify right side
135,722.96x = 15,210,405,842.81 - Step 5: Solve for x
x = 15,210,405,842.81/135,722.96 - Step 6: Final answer
x = 112,069.51
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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.