Finding the Fourth Proportional to 128,068.74, 192,956.90 and 115,602.84
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Solution
The fourth proportional to 128,068.74, 192,956.90 and 115,602.84 is: 174,174.94
Step by Step Solution
- Step 1: Write the proportion equation
128,068.74 : 192,956.90 = 115,602.84 : x - Step 2: Convert to fraction form
128,068.74/192,956.90 = 115,602.84/x - Step 3: Cross multiply
128,068.74x = 192,956.90 × 115,602.84 - Step 4: Simplify right side
128,068.74x = 22,306,365,059.58 - Step 5: Solve for x
x = 22,306,365,059.58/128,068.74 - Step 6: Final answer
x = 174,174.94
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.