Finding the Fourth Proportional to 135,690.09, 187,129.76 and 84,707.54
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Solution
The fourth proportional to 135,690.09, 187,129.76 and 84,707.54 is: 116,819.89
Step by Step Solution
- Step 1: Write the proportion equation
135,690.09 : 187,129.76 = 84,707.54 : x - Step 2: Convert to fraction form
135,690.09/187,129.76 = 84,707.54/x - Step 3: Cross multiply
135,690.09x = 187,129.76 × 84,707.54 - Step 4: Simplify right side
135,690.09x = 15,851,301,630.39 - Step 5: Solve for x
x = 15,851,301,630.39/135,690.09 - Step 6: Final answer
x = 116,819.89
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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.