Finding the Fourth Proportional to 135,798.48, 187,403.94 and 74,549.70
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Solution
The fourth proportional to 135,798.48, 187,403.94 and 74,549.70 is: 102,879.70
Step by Step Solution
- Step 1: Write the proportion equation
135,798.48 : 187,403.94 = 74,549.70 : x - Step 2: Convert to fraction form
135,798.48/187,403.94 = 74,549.70/x - Step 3: Cross multiply
135,798.48x = 187,403.94 × 74,549.70 - Step 4: Simplify right side
135,798.48x = 13,970,907,505.82 - Step 5: Solve for x
x = 13,970,907,505.82/135,798.48 - Step 6: Final answer
x = 102,879.70
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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.