Finding the Fourth Proportional to 136,642.06, 188,567.06 and 76,216.62
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Solution
The fourth proportional to 136,642.06, 188,567.06 and 76,216.62 is: 105,179.50
Step by Step Solution
- Step 1: Write the proportion equation
136,642.06 : 188,567.06 = 76,216.62 : x - Step 2: Convert to fraction form
136,642.06/188,567.06 = 76,216.62/x - Step 3: Cross multiply
136,642.06x = 188,567.06 × 76,216.62 - Step 4: Simplify right side
136,642.06x = 14,371,943,956.54 - Step 5: Solve for x
x = 14,371,943,956.54/136,642.06 - Step 6: Final answer
x = 105,179.50
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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.