Finding the Fourth Proportional to 102,688.98, 141,709.23 and 57,367.62
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Solution
The fourth proportional to 102,688.98, 141,709.23 and 57,367.62 is: 79,166.44
Step by Step Solution
- Step 1: Write the proportion equation
102,688.98 : 141,709.23 = 57,367.62 : x - Step 2: Convert to fraction form
102,688.98/141,709.23 = 57,367.62/x - Step 3: Cross multiply
102,688.98x = 141,709.23 × 57,367.62 - Step 4: Simplify right side
102,688.98x = 8,129,521,257.13 - Step 5: Solve for x
x = 8,129,521,257.13/102,688.98 - Step 6: Final answer
x = 79,166.44
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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.