Finding the Fourth Proportional to 135,138.97, 186,510.33 and 77,777.13
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Solution
The fourth proportional to 135,138.97, 186,510.33 and 77,777.13 is: 107,343.12
Step by Step Solution
- Step 1: Write the proportion equation
135,138.97 : 186,510.33 = 77,777.13 : x - Step 2: Convert to fraction form
135,138.97/186,510.33 = 77,777.13/x - Step 3: Cross multiply
135,138.97x = 186,510.33 × 77,777.13 - Step 4: Simplify right side
135,138.97x = 14,506,238,182.75 - Step 5: Solve for x
x = 14,506,238,182.75/135,138.97 - Step 6: Final answer
x = 107,343.12
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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.