Finding the Fourth Proportional to 117,699.84, 162,273.32 and 76,233.05
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Solution
The fourth proportional to 117,699.84, 162,273.32 and 76,233.05 is: 105,102.86
Step by Step Solution
- Step 1: Write the proportion equation
117,699.84 : 162,273.32 = 76,233.05 : x - Step 2: Convert to fraction form
117,699.84/162,273.32 = 76,233.05/x - Step 3: Cross multiply
117,699.84x = 162,273.32 × 76,233.05 - Step 4: Simplify right side
117,699.84x = 12,370,590,117.23 - Step 5: Solve for x
x = 12,370,590,117.23/117,699.84 - Step 6: Final answer
x = 105,102.86
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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.