Finding the Fourth Proportional to 135,034.19, 186,309.29 and 77,670.53
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Solution
The fourth proportional to 135,034.19, 186,309.29 and 77,670.53 is: 107,163.53
Step by Step Solution
- Step 1: Write the proportion equation
135,034.19 : 186,309.29 = 77,670.53 : x - Step 2: Convert to fraction form
135,034.19/186,309.29 = 77,670.53/x - Step 3: Cross multiply
135,034.19x = 186,309.29 × 77,670.53 - Step 4: Simplify right side
135,034.19x = 14,470,740,909.87 - Step 5: Solve for x
x = 14,470,740,909.87/135,034.19 - Step 6: Final answer
x = 107,163.53
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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.