Finding the Fourth Proportional to 135,095.80, 186,455.34 and 78,539.98
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Solution
The fourth proportional to 135,095.80, 186,455.34 and 78,539.98 is: 108,398.62
Step by Step Solution
- Step 1: Write the proportion equation
135,095.80 : 186,455.34 = 78,539.98 : x - Step 2: Convert to fraction form
135,095.80/186,455.34 = 78,539.98/x - Step 3: Cross multiply
135,095.80x = 186,455.34 × 78,539.98 - Step 4: Simplify right side
135,095.80x = 14,644,198,674.49 - Step 5: Solve for x
x = 14,644,198,674.49/135,095.80 - Step 6: Final answer
x = 108,398.62
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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.