Finding the Fourth Proportional to 135,507.80, 186,998.16 and 81,795.08
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Solution
The fourth proportional to 135,507.80, 186,998.16 and 81,795.08 is: 112,875.64
Step by Step Solution
- Step 1: Write the proportion equation
135,507.80 : 186,998.16 = 81,795.08 : x - Step 2: Convert to fraction form
135,507.80/186,998.16 = 81,795.08/x - Step 3: Cross multiply
135,507.80x = 186,998.16 × 81,795.08 - Step 4: Simplify right side
135,507.80x = 15,295,529,457.05 - Step 5: Solve for x
x = 15,295,529,457.05/135,507.80 - Step 6: Final answer
x = 112,875.64
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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.