Finding the Fourth Proportional to 128,523.06, 177,337.08 and 83,194.74
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Solution
The fourth proportional to 128,523.06, 177,337.08 and 83,194.74 is: 114,792.72
Step by Step Solution
- Step 1: Write the proportion equation
128,523.06 : 177,337.08 = 83,194.74 : x - Step 2: Convert to fraction form
128,523.06/177,337.08 = 83,194.74/x - Step 3: Cross multiply
128,523.06x = 177,337.08 × 83,194.74 - Step 4: Simplify right side
128,523.06x = 14,753,512,262.96 - Step 5: Solve for x
x = 14,753,512,262.96/128,523.06 - Step 6: Final answer
x = 114,792.72
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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.