Finding the Fourth Proportional to 136,102.13, 187,820.93 and 76,486.13
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Solution
The fourth proportional to 136,102.13, 187,820.93 and 76,486.13 is: 105,550.85
Step by Step Solution
- Step 1: Write the proportion equation
136,102.13 : 187,820.93 = 76,486.13 : x - Step 2: Convert to fraction form
136,102.13/187,820.93 = 76,486.13/x - Step 3: Cross multiply
136,102.13x = 187,820.93 × 76,486.13 - Step 4: Simplify right side
136,102.13x = 14,365,695,320.81 - Step 5: Solve for x
x = 14,365,695,320.81/136,102.13 - Step 6: Final answer
x = 105,550.85
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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.