Finding the Fourth Proportional to 98,511.49, 135,920.84 and 60,257.12
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Solution
The fourth proportional to 98,511.49, 135,920.84 and 60,257.12 is: 83,139.51
Step by Step Solution
- Step 1: Write the proportion equation
98,511.49 : 135,920.84 = 60,257.12 : x - Step 2: Convert to fraction form
98,511.49/135,920.84 = 60,257.12/x - Step 3: Cross multiply
98,511.49x = 135,920.84 × 60,257.12 - Step 4: Simplify right side
98,511.49x = 8,190,197,385.49 - Step 5: Solve for x
x = 8,190,197,385.49/98,511.49 - Step 6: Final answer
x = 83,139.51
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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.