Finding the Fourth Proportional to 136,926.05, 188,957.93 and 76,496.71
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Solution
The fourth proportional to 136,926.05, 188,957.93 and 76,496.71 is: 105,565.45
Step by Step Solution
- Step 1: Write the proportion equation
136,926.05 : 188,957.93 = 76,496.71 : x - Step 2: Convert to fraction form
136,926.05/188,957.93 = 76,496.71/x - Step 3: Cross multiply
136,926.05x = 188,957.93 × 76,496.71 - Step 4: Simplify right side
136,926.05x = 14,454,659,118.53 - Step 5: Solve for x
x = 14,454,659,118.53/136,926.05 - Step 6: Final answer
x = 105,565.45
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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.