Finding the Fourth Proportional to 138,855.04, 191,620.65 and 75,193.09
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Solution
The fourth proportional to 138,855.04, 191,620.65 and 75,193.09 is: 103,766.84
Step by Step Solution
- Step 1: Write the proportion equation
138,855.04 : 191,620.65 = 75,193.09 : x - Step 2: Convert to fraction form
138,855.04/191,620.65 = 75,193.09/x - Step 3: Cross multiply
138,855.04x = 191,620.65 × 75,193.09 - Step 4: Simplify right side
138,855.04x = 14,408,548,781.31 - Step 5: Solve for x
x = 14,408,548,781.31/138,855.04 - Step 6: Final answer
x = 103,766.84
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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.