Finding the Fourth Proportional to 98,398.67, 135,866.46 and 76,850.81
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Solution
The fourth proportional to 98,398.67, 135,866.46 and 76,850.81 is: 106,113.69
Step by Step Solution
- Step 1: Write the proportion equation
98,398.67 : 135,866.46 = 76,850.81 : x - Step 2: Convert to fraction form
98,398.67/135,866.46 = 76,850.81/x - Step 3: Cross multiply
98,398.67x = 135,866.46 × 76,850.81 - Step 4: Simplify right side
98,398.67x = 10,441,446,439.25 - Step 5: Solve for x
x = 10,441,446,439.25/98,398.67 - Step 6: Final answer
x = 106,113.69
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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.