Finding the Fourth Proportional to 117,235.18, 161,780.78 and 66,934.18
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Solution
The fourth proportional to 117,235.18, 161,780.78 and 66,934.18 is: 92,367.02
Step by Step Solution
- Step 1: Write the proportion equation
117,235.18 : 161,780.78 = 66,934.18 : x - Step 2: Convert to fraction form
117,235.18/161,780.78 = 66,934.18/x - Step 3: Cross multiply
117,235.18x = 161,780.78 × 66,934.18 - Step 4: Simplify right side
117,235.18x = 10,828,663,849.06 - Step 5: Solve for x
x = 10,828,663,849.06/117,235.18 - Step 6: Final answer
x = 92,367.02
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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.