Finding the Fourth Proportional to 137,149.30, 189,273.81 and 76,722.49
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Solution
The fourth proportional to 137,149.30, 189,273.81 and 76,722.49 is: 105,881.39
Step by Step Solution
- Step 1: Write the proportion equation
137,149.30 : 189,273.81 = 76,722.49 : x - Step 2: Convert to fraction form
137,149.30/189,273.81 = 76,722.49/x - Step 3: Cross multiply
137,149.30x = 189,273.81 × 76,722.49 - Step 4: Simplify right side
137,149.30x = 14,521,558,519.29 - Step 5: Solve for x
x = 14,521,558,519.29/137,149.30 - Step 6: Final answer
x = 105,881.39
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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.