Finding the Fourth Proportional to 100,374.98, 138,396.33 and 86,738.63
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Solution
The fourth proportional to 100,374.98, 138,396.33 and 86,738.63 is: 119,594.62
Step by Step Solution
- Step 1: Write the proportion equation
100,374.98 : 138,396.33 = 86,738.63 : x - Step 2: Convert to fraction form
100,374.98/138,396.33 = 86,738.63/x - Step 3: Cross multiply
100,374.98x = 138,396.33 × 86,738.63 - Step 4: Simplify right side
100,374.98x = 12,004,307,369.25 - Step 5: Solve for x
x = 12,004,307,369.25/100,374.98 - Step 6: Final answer
x = 119,594.62
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1.5x scale
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.