Finding the Fourth Proportional to 98,511.12, 135,610.20 and 74,599.92
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Solution
The fourth proportional to 98,511.12, 135,610.20 and 74,599.92 is: 102,694.09
Step by Step Solution
- Step 1: Write the proportion equation
98,511.12 : 135,610.20 = 74,599.92 : x - Step 2: Convert to fraction form
98,511.12/135,610.20 = 74,599.92/x - Step 3: Cross multiply
98,511.12x = 135,610.20 × 74,599.92 - Step 4: Simplify right side
98,511.12x = 10,116,510,071.18 - Step 5: Solve for x
x = 10,116,510,071.18/98,511.12 - Step 6: Final answer
x = 102,694.09
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1.5x scale
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.