Finding the Fourth Proportional to 122,781.36, 168,952.86 and 102,573.48
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Solution
The fourth proportional to 122,781.36, 168,952.86 and 102,573.48 is: 141,145.88
Step by Step Solution
- Step 1: Write the proportion equation
122,781.36 : 168,952.86 = 102,573.48 : x - Step 2: Convert to fraction form
122,781.36/168,952.86 = 102,573.48/x - Step 3: Cross multiply
122,781.36x = 168,952.86 × 102,573.48 - Step 4: Simplify right side
122,781.36x = 17,330,082,806.15 - Step 5: Solve for x
x = 17,330,082,806.15/122,781.36 - Step 6: Final answer
x = 141,145.88
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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.