Finding the Fourth Proportional to 135,389.34, 186,839.26 and 77,996.99
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Solution
The fourth proportional to 135,389.34, 186,839.26 and 77,996.99 is: 107,636.98
Step by Step Solution
- Step 1: Write the proportion equation
135,389.34 : 186,839.26 = 77,996.99 : x - Step 2: Convert to fraction form
135,389.34/186,839.26 = 77,996.99/x - Step 3: Cross multiply
135,389.34x = 186,839.26 × 77,996.99 - Step 4: Simplify right side
135,389.34x = 14,572,900,165.93 - Step 5: Solve for x
x = 14,572,900,165.93/135,389.34 - Step 6: Final answer
x = 107,636.98
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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.