Finding the Fourth Proportional to 136,885.48, 188,899.98 and 76,456.99
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Solution
The fourth proportional to 136,885.48, 188,899.98 and 76,456.99 is: 105,509.54
Step by Step Solution
- Step 1: Write the proportion equation
136,885.48 : 188,899.98 = 76,456.99 : x - Step 2: Convert to fraction form
136,885.48/188,899.98 = 76,456.99/x - Step 3: Cross multiply
136,885.48x = 188,899.98 × 76,456.99 - Step 4: Simplify right side
136,885.48x = 14,442,723,881.86 - Step 5: Solve for x
x = 14,442,723,881.86/136,885.48 - Step 6: Final answer
x = 105,509.54
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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.