Finding the Fourth Proportional to 133,318.48, 183,979.68 and 76,729.84
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Solution
The fourth proportional to 133,318.48, 183,979.68 and 76,729.84 is: 105,887.28
Step by Step Solution
- Step 1: Write the proportion equation
133,318.48 : 183,979.68 = 76,729.84 : x - Step 2: Convert to fraction form
133,318.48/183,979.68 = 76,729.84/x - Step 3: Cross multiply
133,318.48x = 183,979.68 × 76,729.84 - Step 4: Simplify right side
133,318.48x = 14,116,731,409.65 - Step 5: Solve for x
x = 14,116,731,409.65/133,318.48 - Step 6: Final answer
x = 105,887.28
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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.