Finding the Fourth Proportional to 147,638.42, 203,747.65 and 83,129.84
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Solution
The fourth proportional to 147,638.42, 203,747.65 and 83,129.84 is: 114,722.92
Step by Step Solution
- Step 1: Write the proportion equation
147,638.42 : 203,747.65 = 83,129.84 : x - Step 2: Convert to fraction form
147,638.42/203,747.65 = 83,129.84/x - Step 3: Cross multiply
147,638.42x = 203,747.65 × 83,129.84 - Step 4: Simplify right side
147,638.42x = 16,937,510,696.05 - Step 5: Solve for x
x = 16,937,510,696.05/147,638.42 - Step 6: Final answer
x = 114,722.92
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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.