Finding the Fourth Proportional to 189,111.64, 260,975.76 and 104,231.68
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Solution
The fourth proportional to 189,111.64, 260,975.76 and 104,231.68 is: 143,840.65
Step by Step Solution
- Step 1: Write the proportion equation
189,111.64 : 260,975.76 = 104,231.68 : x - Step 2: Convert to fraction form
189,111.64/260,975.76 = 104,231.68/x - Step 3: Cross multiply
189,111.64x = 260,975.76 × 104,231.68 - Step 4: Simplify right side
189,111.64x = 27,201,941,904.08 - Step 5: Solve for x
x = 27,201,941,904.08/189,111.64 - Step 6: Final answer
x = 143,840.65
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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.