Finding the Fourth Proportional to 117,605.70, 175,976.55 and 86,501.70
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Solution
The fourth proportional to 117,605.70, 175,976.55 and 86,501.70 is: 129,434.80
Step by Step Solution
- Step 1: Write the proportion equation
117,605.70 : 175,976.55 = 86,501.70 : x - Step 2: Convert to fraction form
117,605.70/175,976.55 = 86,501.70/x - Step 3: Cross multiply
117,605.70x = 175,976.55 × 86,501.70 - Step 4: Simplify right side
117,605.70x = 15,222,270,735.14 - Step 5: Solve for x
x = 15,222,270,735.14/117,605.70 - Step 6: Final answer
x = 129,434.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.