Finding the Fourth Proportional to 128,065,144.61, 176,729,862.39 and 69,327,766.49
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Solution
The fourth proportional to 128,065,144.61, 176,729,862.39 and 69,327,766.49 is: 95,672,297.62
Step by Step Solution
- Step 1: Write the proportion equation
128,065,144.61 : 176,729,862.39 = 69,327,766.49 : x - Step 2: Convert to fraction form
128,065,144.61/176,729,862.39 = 69,327,766.49/x - Step 3: Cross multiply
128,065,144.61x = 176,729,862.39 × 69,327,766.49 - Step 4: Simplify right side
128,065,144.61x = 12,252,286,630,440,124 - Step 5: Solve for x
x = 12,252,286,630,440,124/128,065,144.61 - Step 6: Final answer
x = 95,672,297.62
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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.