Finding the Fourth Proportional to 153,882.47, 212,368.55 and 85,912.80
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Solution
The fourth proportional to 153,882.47, 212,368.55 and 85,912.80 is: 118,565.66
Step by Step Solution
- Step 1: Write the proportion equation
153,882.47 : 212,368.55 = 85,912.80 : x - Step 2: Convert to fraction form
153,882.47/212,368.55 = 85,912.80/x - Step 3: Cross multiply
153,882.47x = 212,368.55 × 85,912.80 - Step 4: Simplify right side
153,882.47x = 18,245,176,762.44 - Step 5: Solve for x
x = 18,245,176,762.44/153,882.47 - Step 6: Final answer
x = 118,565.66
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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.