Finding the Fourth Proportional to 203,681.40, 305,558.55 and 85,364.70
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Solution
The fourth proportional to 203,681.40, 305,558.55 and 85,364.70 is: 128,062.33
Step by Step Solution
- Step 1: Write the proportion equation
203,681.40 : 305,558.55 = 85,364.70 : x - Step 2: Convert to fraction form
203,681.40/305,558.55 = 85,364.70/x - Step 3: Cross multiply
203,681.40x = 305,558.55 × 85,364.70 - Step 4: Simplify right side
203,681.40x = 26,083,913,953.19 - Step 5: Solve for x
x = 26,083,913,953.19/203,681.40 - Step 6: Final answer
x = 128,062.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.