Finding the Fourth Proportional to 98,789.68, 136,239.60 and 84,503.44
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Solution
The fourth proportional to 98,789.68, 136,239.60 and 84,503.44 is: 116,537.63
Step by Step Solution
- Step 1: Write the proportion equation
98,789.68 : 136,239.60 = 84,503.44 : x - Step 2: Convert to fraction form
98,789.68/136,239.60 = 84,503.44/x - Step 3: Cross multiply
98,789.68x = 136,239.60 × 84,503.44 - Step 4: Simplify right side
98,789.68x = 11,512,714,864.22 - Step 5: Solve for x
x = 11,512,714,864.22/98,789.68 - Step 6: Final answer
x = 116,537.63
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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.