Finding the Fourth Proportional to 155,620.38, 214,753.98 and 87,643.98
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Solution
The fourth proportional to 155,620.38, 214,753.98 and 87,643.98 is: 120,947.48
Step by Step Solution
- Step 1: Write the proportion equation
155,620.38 : 214,753.98 = 87,643.98 : x - Step 2: Convert to fraction form
155,620.38/214,753.98 = 87,643.98/x - Step 3: Cross multiply
155,620.38x = 214,753.98 × 87,643.98 - Step 4: Simplify right side
155,620.38x = 18,821,893,528.04 - Step 5: Solve for x
x = 18,821,893,528.04/155,620.38 - Step 6: Final answer
x = 120,947.48
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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.