Finding the Fourth Proportional to 99,220.76, 136,927.11 and 53,898.74
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Solution
The fourth proportional to 99,220.76, 136,927.11 and 53,898.74 is: 74,381.60
Step by Step Solution
- Step 1: Write the proportion equation
99,220.76 : 136,927.11 = 53,898.74 : x - Step 2: Convert to fraction form
99,220.76/136,927.11 = 53,898.74/x - Step 3: Cross multiply
99,220.76x = 136,927.11 × 53,898.74 - Step 4: Simplify right side
99,220.76x = 7,380,198,016.21 - Step 5: Solve for x
x = 7,380,198,016.21/99,220.76 - Step 6: Final answer
x = 74,381.60
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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.