Finding the Fourth Proportional to 112,619.70, 155,441.43 and 74,386.08
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Solution
The fourth proportional to 112,619.70, 155,441.43 and 74,386.08 is: 102,670.12
Step by Step Solution
- Step 1: Write the proportion equation
112,619.70 : 155,441.43 = 74,386.08 : x - Step 2: Convert to fraction form
112,619.70/155,441.43 = 74,386.08/x - Step 3: Cross multiply
112,619.70x = 155,441.43 × 74,386.08 - Step 4: Simplify right side
112,619.70x = 11,562,678,647.29 - Step 5: Solve for x
x = 11,562,678,647.29/112,619.70 - Step 6: Final answer
x = 102,670.12
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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.