Finding the Fourth Proportional to 135,693.78, 187,252.99 and 81,969.44
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Solution
The fourth proportional to 135,693.78, 187,252.99 and 81,969.44 is: 113,115.16
Step by Step Solution
- Step 1: Write the proportion equation
135,693.78 : 187,252.99 = 81,969.44 : x - Step 2: Convert to fraction form
135,693.78/187,252.99 = 81,969.44/x - Step 3: Cross multiply
135,693.78x = 187,252.99 × 81,969.44 - Step 4: Simplify right side
135,693.78x = 15,349,023,397.92 - Step 5: Solve for x
x = 15,349,023,397.92/135,693.78 - Step 6: Final answer
x = 113,115.16
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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.