Finding the Fourth Proportional to 189,642.42, 261,707.46 and 103,602.60
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Solution
The fourth proportional to 189,642.42, 261,707.46 and 103,602.60 is: 142,972.09
Step by Step Solution
- Step 1: Write the proportion equation
189,642.42 : 261,707.46 = 103,602.60 : x - Step 2: Convert to fraction form
189,642.42/261,707.46 = 103,602.60/x - Step 3: Cross multiply
189,642.42x = 261,707.46 × 103,602.60 - Step 4: Simplify right side
189,642.42x = 27,113,573,295.40 - Step 5: Solve for x
x = 27,113,573,295.40/189,642.42 - Step 6: Final answer
x = 142,972.09
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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.