Finding the Fourth Proportional to 103,138.80, 154,866.60 and 56,482.80
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Solution
The fourth proportional to 103,138.80, 154,866.60 and 56,482.80 is: 84,810.95
Step by Step Solution
- Step 1: Write the proportion equation
103,138.80 : 154,866.60 = 56,482.80 : x - Step 2: Convert to fraction form
103,138.80/154,866.60 = 56,482.80/x - Step 3: Cross multiply
103,138.80x = 154,866.60 × 56,482.80 - Step 4: Simplify right side
103,138.80x = 8,747,299,194.48 - Step 5: Solve for x
x = 8,747,299,194.48/103,138.80 - Step 6: Final answer
x = 84,810.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.