Finding the Fourth Proportional to 92,072.70, 129,251.70 and 92,072.70
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Solution
The fourth proportional to 92,072.70, 129,251.70 and 92,072.70 is: 129,251.70
Step by Step Solution
- Step 1: Write the proportion equation
92,072.70 : 129,251.70 = 92,072.70 : x - Step 2: Convert to fraction form
92,072.70/129,251.70 = 92,072.70/x - Step 3: Cross multiply
92,072.70x = 129,251.70 × 92,072.70 - Step 4: Simplify right side
92,072.70x = 11,900,552,998.59 - Step 5: Solve for x
x = 11,900,552,998.59/92,072.70 - Step 6: Final answer
x = 129,251.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.