Finding the Fourth Proportional to 136,120.36, 187,847.30 and 74,867.76
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Solution
The fourth proportional to 136,120.36, 187,847.30 and 74,867.76 is: 103,318.17
Step by Step Solution
- Step 1: Write the proportion equation
136,120.36 : 187,847.30 = 74,867.76 : x - Step 2: Convert to fraction form
136,120.36/187,847.30 = 74,867.76/x - Step 3: Cross multiply
136,120.36x = 187,847.30 × 74,867.76 - Step 4: Simplify right side
136,120.36x = 14,063,706,573.05 - Step 5: Solve for x
x = 14,063,706,573.05/136,120.36 - Step 6: Final answer
x = 103,318.17
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1.5x scale
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.