Finding the Fourth Proportional to 129,259.32, 193,888.98 and 40,519.68
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Solution
The fourth proportional to 129,259.32, 193,888.98 and 40,519.68 is: 60,779.52
Step by Step Solution
- Step 1: Write the proportion equation
129,259.32 : 193,888.98 = 40,519.68 : x - Step 2: Convert to fraction form
129,259.32/193,888.98 = 40,519.68/x - Step 3: Cross multiply
129,259.32x = 193,888.98 × 40,519.68 - Step 4: Simplify right side
129,259.32x = 7,856,319,425.13 - Step 5: Solve for x
x = 7,856,319,425.13/129,259.32 - Step 6: Final answer
x = 60,779.52
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1.5x scale
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.