Finding the Fourth Proportional to 136,913.92, 189,201.02 and 98,798.56
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Solution
The fourth proportional to 136,913.92, 189,201.02 and 98,798.56 is: 136,529.49
Step by Step Solution
- Step 1: Write the proportion equation
136,913.92 : 189,201.02 = 98,798.56 : x - Step 2: Convert to fraction form
136,913.92/189,201.02 = 98,798.56/x - Step 3: Cross multiply
136,913.92x = 189,201.02 × 98,798.56 - Step 4: Simplify right side
136,913.92x = 18,692,788,326.53 - Step 5: Solve for x
x = 18,692,788,326.53/136,913.92 - Step 6: Final answer
x = 136,529.49
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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.