Finding the Fourth Proportional to 136,657.56, 188,587.74 and 76,226.70
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Solution
The fourth proportional to 136,657.56, 188,587.74 and 76,226.70 is: 105,193.02
Step by Step Solution
- Step 1: Write the proportion equation
136,657.56 : 188,587.74 = 76,226.70 : x - Step 2: Convert to fraction form
136,657.56/188,587.74 = 76,226.70/x - Step 3: Cross multiply
136,657.56x = 188,587.74 × 76,226.70 - Step 4: Simplify right side
136,657.56x = 14,375,421,080.66 - Step 5: Solve for x
x = 14,375,421,080.66/136,657.56 - Step 6: Final answer
x = 105,193.02
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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.