Finding the Fourth Proportional to 136,248.75, 188,024.09 and 76,632.75
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Solution
The fourth proportional to 136,248.75, 188,024.09 and 76,632.75 is: 105,753.65
Step by Step Solution
- Step 1: Write the proportion equation
136,248.75 : 188,024.09 = 76,632.75 : x - Step 2: Convert to fraction form
136,248.75/188,024.09 = 76,632.75/x - Step 3: Cross multiply
136,248.75x = 188,024.09 × 76,632.75 - Step 4: Simplify right side
136,248.75x = 14,408,802,699.78 - Step 5: Solve for x
x = 14,408,802,699.78/136,248.75 - Step 6: Final answer
x = 105,753.65
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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.