Finding the Fourth Proportional to 136,737.64, 188,707.42 and 76,320.07
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Solution
The fourth proportional to 136,737.64, 188,707.42 and 76,320.07 is: 105,326.99
Step by Step Solution
- Step 1: Write the proportion equation
136,737.64 : 188,707.42 = 76,320.07 : x - Step 2: Convert to fraction form
136,737.64/188,707.42 = 76,320.07/x - Step 3: Cross multiply
136,737.64x = 188,707.42 × 76,320.07 - Step 4: Simplify right side
136,737.64x = 14,402,164,189.03 - Step 5: Solve for x
x = 14,402,164,189.03/136,737.64 - Step 6: Final answer
x = 105,326.99
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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.