Finding the Fourth Proportional to 100,176.43, 138,237.36 and 54,854.95
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Solution
The fourth proportional to 100,176.43, 138,237.36 and 54,854.95 is: 75,696.48
Step by Step Solution
- Step 1: Write the proportion equation
100,176.43 : 138,237.36 = 54,854.95 : x - Step 2: Convert to fraction form
100,176.43/138,237.36 = 54,854.95/x - Step 3: Cross multiply
100,176.43x = 138,237.36 × 54,854.95 - Step 4: Simplify right side
100,176.43x = 7,583,003,470.93 - Step 5: Solve for x
x = 7,583,003,470.93/100,176.43 - Step 6: Final answer
x = 75,696.48
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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.